It will take Anthony 75 minutes to complete the entire group of 180 place cards.
To solve this problem, we can set up a proportion:
12 place cards / 5 minutes = 180 place cards / x minutes
Cross-multiplying, we get:
12x = 900
Dividing both sides by 12, we get:
x = 75
Therefore, it will take Anthony 75 minutes to complete the entire group of 180 place cards.
HURRY 40 POINTS!!
What is the surface area of this right rectangular prism?
Enter your answer as a mixed number in simplest form by filling in the boxes.
ft²
The surface area of the rectangular prism is 29 2/3 ft²
How to determine the surface areaThe formula for calculating the surface area of a rectangular prism is expressed as;
SA = 2(wl + hw + hl)
Where the parameters are;
SA is the surface areaw is the width of the prismh is the height of the prisml is the length of the prismFrom the information given, we have that;
Wl = 3 × 5/2
multiply the values
wl = 15/2
hw = 4/3 × 3
hw = 4
hl = 4/3 × 5/2 = 20/6 = 10/3
Substitute the values
Surface area = 2(4 + 10/3 + 15/2)
Surface area = 2(24 + 20 + 45/6)
Surface area = 2(89)/6
Surface area = 89/3 = 29 2/3 ft²
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in the chi square test for independence, the null hypothesis and the research hypothesis select one: a. always contradict each other b. always agree with each other c. are never actually stated d. are usually both rejected
In "Chi-Square-test" for the inde-pendence, "re-search-hypothesis" and "null-hypothesis" always contradict each other, the Option(a) is correct.
In the "Chi-Square" test for independence, the "Null-Hypothesis" (H₀) assumes that there is no association between the two categorical variables being tested, while the research hypothesis (Hₐ) proposes that there is a significant association between the variables.
These hypotheses are mutually exclusive and contradictory to each other.
If the "null-hypothesis" is rejected based on the results of the chi-square test, it implies that there is evidence to support the "research-hypothesis", which indicates that there is a significant association between the variables.
Conversely, if "null-hypothesis" is not rejected, it suggests that there is not enough evidence to support the "research-hypothesis", and the conclusion would be that there is no significant association between the variables.
Therefore, the correct option is (a).
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the product of three whole numbers is 120. how many different possibilities are there for the three numbers?
There are 15 different possibilities for the three whole numbers whose product is 120.
To find the different possibilities for the three whole numbers, we need to find all the ways we can multiply three whole numbers together to get 120, which is the product.
We can start by listing out the factors of 120:
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
From this list, we can start trying out combinations of three numbers that multiply to 120. For example:
1 x 1 x 120 = 120
1 x 2 x 60 = 120
1 x 3 x 40 = 120
1 x 4 x 30 = 120
1 x 5 x 24 = 120
1 x 6 x 20 = 120
1 x 8 x 15 = 120
2 x 3 x 20 = 120
2 x 4 x 15 = 120
2 x 5 x 12 = 120
2 x 6 x 10 = 120
3 x 4 x 10 = 120
3 x 5 x 8 = 120
4 x 5 x 6 = 120
So there are 15 different possibilities for the three whole numbers that multiply to 120.
To find the different possibilities for the three whole numbers whose product is 120, we need to find the combinations of factors of 120.
Step 1: Find the prime factorization of 120.
[tex]120 = 2*2*2*3*5 (2^3 * 3 * 5)[/tex]
Step 2: Identify the possible factors.
Using the prime factors, we can generate the different whole number factors for 120:
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, and 120.
Step 3: Find the possible combinations of three whole numbers.
1. 1 × 1 × 120
2. 1 × 2 × 60
3. 1 × 3 × 40
4. 1 × 4 × 30
5. 1 × 5 × 24
6. 1 × 6 × 20
7. 1 × 8 × 15
8. 1 × 10 × 12
9. 2 × 2 × 30
10. 2 × 3 × 20
11. 2 × 4 × 15
12. 2 × 5 × 12
13. 2 × 6 × 10
14. 3 × 4 × 10
15. 3 × 5 × 8
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Set of factors can be rearranged in six different ways, there are actually 60 possible ways to arrange the factors into three numbers.
The possible combinations of three whole numbers that result in a product of 120.
One way to approach this is to list all the factors of 120 and then group them into sets of three.
Another method is to use prime factorization.
120 as a product of its prime factors: 2 x 2 x 2 x 3 x 5.
The possible combinations of three factors, we can use a combination formula.
The formula for the number of combinations of n items taken r at a time is:
[tex]nCr = n! / (r! \times (n-r)!)[/tex]
In our case, n = 5 (the number of prime factors), and r = 3 (the number of factors we want to choose).
So, the number of possible combinations is:
[tex]5C3 = 5! / (3! \times 2!) = (5 \times 4 \times 3) / (3 \times 2) = 10[/tex]
There are 10 different possibilities for the three whole numbers that multiply to 120.
These are:
[tex][tex]2 \times 2 \times 30, 2 \times 3 \times 20, 2 \times 4 \times 15, 2 \times 5 \times 12, 2 \times 6 \times 10, 3 \times 4 \times 10, 3 \times 5 \times 8, 4 \times 5 \times 6, 3 \times 2 \times 20, and 5 \times 2 \times 12.[/tex][/tex]
The order of the factors does not matter, so[tex]2 \times 3 \times 20[/tex] is the same as[tex]3 \times 2 \times 20[/tex].
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the dimensions of noah’s ark were reported as 3.0 × 102 cubits by 5.0 × 101 cubits. express this size in units of feet (1 cubit = 1.5 ft)
The dimensions of Noah's Ark in feet are 450 feet by 75 feet if the dimensions of Noah's Ark is 3.0 × 102 cubits by 5.0 × 101 cubits.
Noah's Ark is said to have dimensions of 3.0 × 10^2 cubits by 5.0 × 10^1 cubits. To convert these measurements to feet, we can use the conversion factor of 1 cubit = 1.5 feet.
First, we need to convert the length of the ark from cubits to feet. To do this, we multiply the length of the ark in cubits (3.0 × 10^2) by the conversion factor of 1.5 feet/cubit. This gives us a length of
3.0 × 10^2 cubits x 1.5 feet/cubit = 450 feet
Similarly, we can convert the width of the ark from cubits to feet by multiplying the width in cubits (5.0 × 10^1) by the conversion factor of 1.5 feet/cubit. This gives us a width of:
5.0 × 10^1 cubits x 1.5 feet/cubit = 75 feet
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At Robinson’s Steakhouse, you can choose from 2 steaks cooked to your liking and have the choice of 2 different sides. What is the probability that a customer will choose a Ribeye, well done or medium with corn?
A- 1/3
B- 1/12
C- 2/7
D- 1/6
the probability of a customer choosing a Ribeye, well done or medium with corn is [tex]1[/tex] out of [tex]12[/tex], which is answer B [tex]- 1/12[/tex] Thus, option B is correct.
What is the probability?There are two possible steaks that a customer can choose from, and for each steak, there are three possible ways to cook it: rare, medium, or well-done. Additionally, there are two possible sides to choose from: corn or some other option.
Thus, there are a total of [tex]2 \times 3 \times 2 = 12[/tex] possible meal combinations that a customer can choose from.
Out of these 12 possibilities, there is only one way to get a Ribeye cooked well-done or medium with corn, since there is only one Ribeye option on the menu.
Therefore, the probability of a customer choosing a Ribeye, well done or medium with corn is 1 out of 12, which is answer B- 1/12
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Mary worked from Monday to Saturday last week and bought lunch in the company’s restaurant every day. Her lunches cost a different amount every day. Each lunch cost a multiple of 20¢. The most expensive lunch of the week cost $7. 60 and the cheapest one cost $4. 40. Friday’s lunch cost exactly 1½ times as much as Wednesday’s lunch. Tuesday’s lunch cost $1. 20 more than Thursday’s lunch
The minimum total cost of Mary's six lunches is $30.40.
To approach this problem, we need to consider the cost of each lunch individually and then sum them up to get the total cost. Let's start by finding the cost of Wednesday's lunch. We know that Friday's lunch cost 1.5 times as much as Wednesday's lunch, so we can write:
Friday's lunch = 1.5 x Wednesday's lunch
We also know that each lunch costs a multiple of 20 cents, so we can write:
Friday's lunch = $x, where x is a multiple of 20 cents
Wednesday's lunch = $y, where y is a multiple of 20 cents
Combining these two equations, we get:
$x = 1.5y
Since we're looking for the minimum total cost, we want to minimize the cost of each lunch. The cheapest lunch costs $4.40, which is equivalent to 22 multiples of 20 cents. So we can write:
$4.40 ≤ y ≤ $7.60
Now, we can use the information about Tuesday's lunch to find the cost of Thursday's lunch. We know that Tuesday's lunch cost $1.20 more than Thursday's lunch, so we can write:
Tuesday's lunch = Thursday's lunch + $1.20
Again, each lunch costs a multiple of 20 cents, so we can write:
Tuesday's lunch = $z, where z is a multiple of 20 cents
Thursday's lunch = $w, where w is a multiple of 20 cents
Combining these two equations, we get:
$z = w + $1.20
Now, we have two equations and two unknowns (x and y) and (z and w). We can solve these equations simultaneously to find the cost of each lunch. We get:
x = 1.5y
z = w + $1.20
We can substitute the first equation into the second equation to get:
z = 1.5y + $1.20
Now we have three equations and three unknowns (x, y, and z). We also know that each lunch costs a multiple of 20 cents, so we can write:
x = $a, where a is a multiple of 20 cents
y = $b, where b is a multiple of 20 cents
z = $c, where c is a multiple of 20 cents
Substituting these values into our equations, we get:
$a = 1.5b
$c = b + $1.20
$4.40 ≤ b ≤ $7.60
We can solve for b by substituting the second equation into the third equation:
$c = b + $1.20
$b = c - $1.20
Substituting this value of b into the first equation, we get:
$a = 1.5(c - $1.20)
$a = 1.5c - $1.80
Now, we can substitute these values into our equation for the total cost of Mary's six lunches:
Total cost = $a + $b + $c + $d + $e + $f
Total cost = $1.5c - $1.80 + $c + $b + $b + $c + $d + $e
Total cost = $4c - $1.80 + $b + $d + $e
We want to minimize the total cost, so we want to minimize each term in the above equation. We know that the minimum value of b is $4.40, and we want to choose c, d, and e to be as close to $4.40 as possible. This will minimize the total cost. The maximum value of c is $7.60, so we can choose c to be $7.60. We can then choose d and e to be $4.40 each, since these are the minimum possible values.
Substituting these values into our equation for the total cost, we get:
Total cost = $4c - $1.80 + $b + $d + $e
Total cost = $4($7.60) - $1.80 + $4.40 + $4.40
Total cost = $30.40
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Complete Question:
Mary worked from Monday to Saturday last week and bought lunch in the company's restaurant every day. Her lunches cost a different amount every day. Each lunch cost a multiple of 20¢.The most expensive lunch of the week cost $7.60 and the cheapest one cost $4.40.Friday's lunch cost exactly 1½ times as much as Wednesday's lunch. Tuesday's lunch cost $1.20 more than Thursday's lunch.
(a) What is the minimum total that Mary's six lunches last week could have cost?
The table shows the results of a recent survey of sixth grade students at Potter Middle School about their favorite sports.
What fraction of the students chose football or soccer? Express your answer in simplest form.
20% of the students surveyed did not choose soccer, football, or basketball as their favorite sport.
To find the percentage of students who did not choose soccer, football, or basketball as their favorite sport, we need to first find the total number of students who did not choose any of these sports.
Total number of students who chose soccer, football or basketball = 54 + 42 + 24 = 120
Number of students who did not choose any of these sports = 150 - 120 = 30
Therefore, the percentage of students who did not choose soccer, football or basketball as their favorite sport is:
(30/150) x 100% = 20%
So, 20% of the students surveyed did not choose soccer, football, or basketball as their favorite sport.
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--The complete Question is, Out of the 150 students surveyed, 54 chose soccer, 42 chose football, and 24 chose basketball. What percentage of the students surveyed did not choose soccer, football or basketball as their favorite sport? --
what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data?
After completing the following steps, you will have the quadratic regression equation that models the data with values rounded to the nearest whole number. Keep in mind that you'll need specific data points to provide an actual equation.
To find the values that complete the quadratic regression equation for a given set of data, you'll need to follow these steps:
1. Organize the data points into a table with x-values and y-values.
2. Determine the sums of x, y, x², x³, x⁴, and xy.
3. Create a system of linear equations using the sums found in step 2.
4. Solve the system of linear equations to find the coefficients a, b, and c.
5. Write the quadratic regression equation in the form y = ax² + bx + c, rounding the coefficients to the nearest whole number.
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pamela registered her new phone number on the do not call registry. how long will her number remain on the list?
If Pamela has registered for the first time, it will remain on the Do Not Call list permanently. If she has re-registered, it will remain on the list for an additional five years from the date of re-registration.
How long do phone numbers remain on the Do Not Call Registry?The length of time that Pamela's phone number will remain on the National Do Not Call Registry depends on whether she registered her number on the Do Not Call Registry for the first time or if she has re-registered her number after it has already been on the list for a while.
If Pamela registered her phone number for the first time, it will be added to the Do Not Call Registry within 31 days of her registration date. Her phone number will remain on the list permanently, unless she requests to remove it or the number is disconnected.
If Pamela has re-registered her phone number after it has already been on the list for a while, her number's registration will be extended for another five years from the date she re-registered it.
Therefore, if Pamela registered her phone number for the first time, it will remain on the list permanently. If she has re-registered her number, it will remain on the list for an additional five years from the date of re-registration.
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shawna is going out of town for the day, so she asks a friend to watch her 3 dogs. she wants to leave 12 of a pound of food for each dog. if a can of dog food has 0.75 pounds of food, how many cans should shawna leave?write your answer as a whole number, decimal, fraction, or mixed number. simplify any fractions.
Shawna wants to make sure her three dogs are fed and cared for when she leaves town for the day. She intends to give each of her dogs 12 ounces of food to achieve this. She must therefore leave a total of 36 ounces of food (3 dogs x 12 ounces of food per dog). 36 ounces are equivalent to 2.25 pounds of food because 16 ounces make up one pound.
There are 0.75 pounds of food in each can of dog food. We must divide 2.25 by 0.75 to find the quantity of dog food Shawna should leave for her companion. 3 dog food cans are the end outcome.Shawna ought to give her buddy three cans of dog food so that she can feed her dogs.
Shawna may make sure her dogs have enough food and are well cared for while she is away by leaving adequate food for them. Shawna may put any fears or concerns about her pets' welfare to rest by leaving ample food and clear directions.
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Answer every question. Pick one option for each question. Show your work.
1. Over one week, a snack booth at a fair sold 362 cans of soft drinks for $1.75 each and
221 hot dogs for $2.35 each. Which calculation will give the total sales of soft drinks and
hot dogs?
A. 362(2.35) + 221(1.75)
B. 221(2.35) + 362(2.35)
C. 221(1.75) + 362(1.75)
D. 362(1.75) + 221(2.35)
Decibel Project Management Services, C/O Spr School, Nethaji Nagar,Ramagiri, Nalgonda, Telangana, India, 508001 is the center for jee mains if anybody same centre please let me know
Project management services refer to the professional assistance and support provided to organizations to plan, execute, and manage projects effectively. These services may include a range of activities, such as project planning, scheduling, budgeting, risk management, stakeholder management, quality assurance, and project reporting.
What is project management?Project management services can be provided by both internal and external professionals. Internal project managers are employees of the organization who are responsible for managing projects within the company.
External project management services can be hired from consulting firms, specialized project management companies, or freelance professionals who work independently.
Project management services can help ensure that projects are delivered on time, within budget, and to the required quality standards.
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Explain project Management Services
what is the degree of the polynomial 8 x to the power of 5 plus 4 x cubed minus 5 x squared minus 9 ?
Out of these powers, the highest is 5.
Therefore, the degree of the polynomial is 5.
The degree of a polynomial is the highest power of the variable in the polynomial. In the given polynomial, the highest power of x is 5,
so the degree of the polynomial is 5.
The degree of a polynomial is the highest power of the variable (x) in the expression.
In the polynomial you provided:
[tex]8x^5 + 4x^3 - 5x^2 - 9[/tex]
Let's identify the terms and their respective powers of x:
[tex]8x^5[/tex]has a power of 5.
[tex]4x^3[/tex]has a power of 3.
[tex]-5x^2[/tex] has a power of 2.
-9 is a constant term, so there is no power of x.
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profitability empirical rule with this dataset? why or why not. no, the measures the proportion of a movies budget recovered. a profitability less than 1 the movie did not make enough money to cover the budget, while a profitability greater than means means it made a profit. a boxplot of the profitability ratings of 136 movies that came out in 2011 is shown below. (the largest outlier is the movie 1 insidi high gross revenue.)
The empirical rule does not apply to this dataset because the empirical rule is used to describe data that is normally distributed.
The empirical rule is a statistical rule that states that for a normal distribution.
Approximately 68% of the data will fall within one standard deviation of the mean, 95% of the data will fall within two standard deviations of the mean, and 99.7% of the data will fall within three standard deviations of the mean.
The dataset is normally distributedThe dataset is normally distributed, determine if the empirical rule appliesThe empirical rule does not apply, identify an alternative method to describe the datasetThe empirical rule does not apply to this dataset because the empirical rule is used to describe data that is normally distributed.
This dataset does not appear to be normally distributed, as evidenced by the large outlier (1 Insidi High Gross Revenue).
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Can someone help me Simplify:
(-7) (-3)
????
21 is the value of expression .
What is a mathematical expression?
A mathematical expression is a phrase that includes at least two numbers or variables, at least one arithmetic operation, and the expression itself. This mathematical operation may be addition, subtraction, multiplication, or division.
An expression's basic components are as follows: Expression: (Math Operator, Number/Variable, Math Operator). Any mathematical statement made up of numbers, variables, and an action between them is called an expression or an algebraic expression.
= (-7) (-3)
= 21
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he following table provides data on three popular protein supplements. (figures shown correspond to a single serving.) protein (g) carbohydrates (g) sodium (mg) cost ($) designer whey (next) 18 2 80 0.50 muscle milk (cytosport) 32 16 240 1.60 pure whey protein stack (champion) 24 3 100 0.60 you are thinking of combining designer whey and muscle milk to obtain a 7-day supply that provides exactly 262 grams of protein and 54 grams of carbohydrates. how many servings of each supplement should you combine in order to meet your requirements? designer whey servings muscle milk s
To meet your requirements for a 7-day supply, you should combine 11 servings of Designer Whey and 2 servings of Muscle Milk.
Let x be the number of Designer Whey servings and y be the number of Muscle Milk servings.
Use the protein requirements to set up an equation:
18x + 32y = 262 (Designer Whey has 18g of protein per serving, and Muscle Milk has 32g per serving)
Use the carbohydrate requirements to set up a second equation:
2x + 16y = 54 (Designer Whey has 2g of carbohydrates per serving, and Muscle Milk has 16g per serving)
Now you have a system of two linear equations:
18x + 32y = 262
2x + 16y = 54
To solve this system, first simplify the second equation by dividing by 2:
x + 8y = 27
Rearrange the simplified equation to isolate x:
x = 27 - 8y
Substitute the expression for x from step 4 into the first equation:
18(27 - 8y) + 32y = 262
Distribute the 18 and simplify the equation:
486 - 144y + 32y = 262
Combine like terms and solve for y:
-112y = -224
y = 2
Substitute the value of y back into the expression for x from step 4:
x = 27 - 8(2)
x = 27 - 16
x = 11
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in a binomial experiment, the . a. probability of success does not change from trial to trial b. probability of success does change from trial to trial c. probability of success could change from trial to trial, depending on the situation under consideration d. probability of success is always the same as the probability of failure
In a binomial experiment, the option (a) probability of success does not change from trial to trial
In a binomial experiment, each trial is independent of the previous trials, and the probability of success remains constant throughout the experiment. Therefore, option (a) is correct.
Option (b) is incorrect because the probability of success does not change from trial to trial.
Option (c) is partially correct because the probability of success could change from trial to trial in certain situations, but this would not be considered a binomial experiment.
Option (d) is incorrect because the probability of success and failure must add up to 1 in a binomial experiment, but they are not necessarily equal to each other.
Therefore, the correct option is (a) probability of success does not change from trial to trial
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What is the equation of the line in slope-intercept form?
Answer:
y = 3/5x + 3
Step-by-step explanation:
points on the graph
(-5,0) and (0,3)
0- 3 = -3
-5 - 0 = -5
-3/-5= 3/5
y = 3/5x + B
use a point from the graph
3 = 3/5 x 0 + B
3 = 0 + B
3 -0 = 3
3 = B
check answer
(-5,0)
Y = 3/5 x -5 + 3
Y = -15/3 + 3
Y = -3 + 3
Y = 0
Making the equation true y = 3/5x + 3
If triangle PQR is has a right angle at Q and m<R is 45°, what is the length of PR is PQ is 3?
1. 3
2. 2
3. 2√3
4. 3√2
The length of PR is 3√2
Define triangleA triangle is a polygon with three sides and three angles. It is a two-dimensional figure with three straight sides that connect three non-collinear points. The sum of the angles in a triangle always adds up to 180 degrees.
Since triangle PQR is a right triangle,
Given PQ=3
m<R =45°
m<P =45°(sum of angles of triangle is 180°)
So, RQ=3
Using pythagoras theorem;
PR²=PQ+RQ²
PR=√3²+3²
PR=3√2
So the answer is option 4. 3√2
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the probability that pete will catch fish when he goes fishing is .88. pete is going to fish 3 days next week. define the random variable x to be the number of days pete catches fish. the expected number of days pete will catch fish is group of answer choices 0.56. 0.88. 2.64. 0.3168.
The expected number of days Pete will catch fish when he goes fishing 3 days next week, given that the probability of catching fish on any given day is 0.88, is 2.64 days.
In this problem, we are interested in the number of days Pete catches fish when he goes fishing three days next week. We define a random variable X to represent the number of days he catches fish. Since each day is an independent trial with a constant probability of success, we can model the number of days Pete catches fish as a binomial distribution.
The binomial distribution is characterized by two parameters: n and p, where n is the number of trials and p is the probability of success in each trial. In this case, we have n = 3 (Pete is going fishing three days) and p = 0.88 (the probability that Pete catches fish on any given day). Therefore, the probability mass function of X is
P(X = k) = (3 choose k) × 0.88^k × (1-0.88)^(3-k)
where k = 0, 1, 2, or 3.
The expected value of a binomial distribution is given by the formula:
E(X) = n × p
Therefore, in this case, the expected number of days Pete catches fish is
E(X) = 3 × 0.88 = 2.64
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I am giving all my points if you answer this asap! You can make any polynomial you want just use one from column A and one from B. PLEASE HELP!!!!!
You are going to design an advertisement for a new polynomial identity that you are going to invent. Your goal for this activity is to demonstrate the proof of your polynomial identity through an algebraic proof and a numerical proof in an engaging way! Make it so the whole world wants to purchase your polynomial identity and can't imagine living without it!
You may do this by making a flier, a newspaper or magazine advertisement, making an infomercial video or audio recording, or designing a visual presentation for investors through a flowchart or PowerPoint.
You must:
Label and display your new polynomial identity
Prove that it is true through an algebraic proof, identifying each step
Demonstrate that your polynomial identity works on numerical relationships
Warning! No identities used in the lesson may be submitted. Create your own using the columns below. See what happens when different binomials or trinomials are combined. Square one factor from column A and add it to one factor from column B to develop your own identity.
Column A
(x − y)
(x + y)
(y + x)
(y − x)
Column B
(x^2 + 2xy + y^2)
(x^2 − 2xy + y^2)
(ax + b)
(cy + d)
The polynomial identity created from the columns is (x - y)(x^2 + 2xy + y^2) + (x + y)(x^2 - 2xy + y^2) = 2x^3 - 2xy^2
Creating a polynomial identityIntroducing the new polynomial identity:
(x - y)(x^2 + 2xy + y^2) + (x + y)(x^2 - 2xy + y^2) = 2x^3 - 2xy^2
Algebraic proof:
Expanding the left side of the equation:
(x^3 - xy^2 + 2x^2y + xy^2 + y^3) + (x^3 + xy^2 - 2x^2y + xy^2 + y^3)
= 2x^3 + 2y^3
Simplifying the left side of the equation:
2x^3 - 2xy^2 = 2x^3 - 2xy^2
Therefore, the polynomial identity is true.
Numerical proof:
Let x = 2 and y = 3.
(x - y)(x^2 + 2xy + y^2) + (x + y)(x^2 - 2xy + y^2) = 2x^3 - 2xy^2
(2 -3y)(2^2 + 2(2)(3) + (3)^2) + (2 + 3)(2^2 - 2(2)(3) + 3^2) = 2(2)^3 - 2(2)(3)^2
-20 = -20
Therefore, the numerical proof also shows that the polynomial identity is true.
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please help someone..50 points
Answer:
We can find the sum of the interior angles of any polygon using the formula
[tex]S_{n}=180(n-2)[/tex], where n is the number of sides.
Because each of these polygons have four sides, we can use one formula where our n is 4 to find the sum of the interior angles:
[tex]S_{4}=180(4-2)\\ S_{4}=180*2\\ S_{4}=360[/tex]
Thus, for all four problems, we can set the four angles equal in the four polygons equal to 360 and solve for the variables
(15) *Note the right angle symbol in this problem which always equals 90°
[tex]84+90+(2x+118)+(2x+68)=360\\174+2x+118+2x+68=360\\360+4x=360\\4x=0\\x=0[/tex]
Now, to find the measure of <Y, we simply plug in 0 for x in its equation
m<Y = 2(0) + 118 = 118°
(16):
[tex]82+105+(8x+11)+10x=360\\187+8x+11+10x=360\\198+18x=360\\18x=162\\x=9[/tex]
To find the measure of <F, we plug in 9 for x in its equation
m<F = 10(9) = 90°
(17):
[tex]95+95+(10x-5)+(8x+13)=360\\190+10x-5+8x+13=360\\198+18x=360\\18x=162\\x=9[/tex]
To find the measure of <M, we plug in 9 for x in its equation
m<M = 10(9) - 5 = 85°
(18):
[tex](14x-7)+(11x-2)+93+76=360\\14x-7+11x-2+169=360\\25x+160=360\\25x=200\\x=8[/tex]
To find the measure of <M, we plug in 8 for x in its equation
m<M = 11(8) - 2 = 86°
the dimensions of a square right pyramid are shown below. the pyramid is sliced by a plane that passes vertically through the top vertex and is perpendicular to the base. what is the resulting two-dimensional shape and the area of the plane section?
The resulting two-dimensional shape is a square with an area of 72 square units.
The pyramid is a square right pyramid, the base is a square and the vertical height meets the base at its center. When the pyramid is sliced by a plane that passes vertically through the top vertex and is perpendicular to the base, the resulting two-dimensional shape is a square.
The plane section intersects the four triangular faces of the pyramid, creating four smaller triangles with the same shape and size. These four triangles can be rearranged to form a smaller square that is similar to the larger square base of the pyramid. The area of the plane section is equal to the area of the smaller square, which is proportional to the area of the larger square base. The proportionality constant is equal to the ratio of the height of the plane section to the height of the pyramid.
Let H be the height of the pyramid and h be the height of the plane section. Then, we have:
h/H = (side length of smaller square)/(side length of larger square)
= √(2)/2
Solving for h, we get:
h = (√(2)/2) * H
The area of the plane section is then:
A = (side length of smaller square)²
= (√2)/2 * side length of larger square)²
= (√(2)/2)² * (side length of larger square)²
= (1/2) * (side length of larger square)²
Since the side length of the larger square base is given, we can substitute it in and simplify to get:
A = (1/2) * (12)² = 72 square units
As a result, the resultant two-dimensional form is a square with 72 square units of area.
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Divide and write your answer in standard notation to the nearest whole number with commas.
Answer:
The answer is 1×10⁶ to the nearest whole number
Step-by-step explanation:
7.6×10⁰/5.4×10‐⁶
7.6×10^(0-(-6)/5.4
7.6×10^(0+6)/5.4
7.6×10⁶/5.4
=1×10⁶ to the nearest whole number
Linear
Relationships:Question 8
A cell phone provider will allow you to pay for a new
phone over time. They require a $50 initial payment and
then charge $25 per month. If this situation were
represented by a function, where y represents the total
cost of the phone and x represents number of months,
what would be the slope?
The required slope in the given situation is (C) 25.
What is the slope?The slope or gradient of a line in mathematics is a numerical representation of the steepness and direction of the line.
The slope is the ratio of the rise in height between two points to the fall in elevation between those same two points.
A line's slope reveals how steep it is.
As the slope rises, the line gets progressively steeper.
The slope becomes flatter as it becomes smaller.
The direction of the line—whether it is going up, down, horizontally, or vertically—is also revealed by the slope.
So, after multiplying the initial cost by the number of months, x, the monthly charge, 25, is then applied.
The function we have is: y = 25x + 50
Then, the slope is 25.
Therefore, the required slope in the given situation is (C) 25.
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Correct question:
A cell phone provider will allow you to pay for a new phone over time. They require a $50 initial payment and then charge $25 per month. If this situation were represented by a function, where y represents the total cost of the phone and x represents the number of months, what would be the slope?
A) 0
B) 75
C) 25
D) 50
Hw 18.2 -word problems
Jesenia is standing on a pedestrian bridge that is 9.5 feet above the lake .She looks down and sees a duck in the water .The duck is 4.5 feet away from jesenias position on the bridge.What is the angle of depression from jesenia to the duck ?
round the nearest degree.
The angle of depression from Jesenia to the duck is 25.17°. The solution has been obtained by using trigonometry.
What is trigonometry?
Right-angled triangles, their sides, angles, and connections are the main topics of the mathematical field of trigonometry.
We are given that that Jesenia is standing on a pedestrian bridge that is 9.5 feet above the lake and the duck is 4.5 feet away from jesenias position on the bridge.
This means that perpendicular is 9.5 and base is 4.5.
We know that tan θ is value of opposite side to adjacent side.
So, we get
⇒ Tan θ = [tex]\frac{4.5}{9.5}[/tex]
⇒ Tan θ = 0.47
⇒ θ = 25.17°
Hence, the angle of depression from Jesenia to the duck is 25.17°.
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Please help me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The equivalent exponential expression for this problem is given as follows:
A. 4^15 x 5^10.
How to simplify the exponential expression?The exponential expression in the context of this problem is defined as follows:
[tex]\left(\frac{4^3}{5^{-2}}\right)^5[/tex]
To simplify the expression, we must first apply the power of power rule, which means that when one exponential expression is elevated to an exponent, we keep the base and multiply the exponents, hence:
4^(15)/5^(-10)
The negative exponent at the denominator means that the expression can be moved to the numerator with a positive exponent, hence the simplified expression is given as follows:
4^15 x 5^10.
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can someone please help me with these 3 there due tomorrow!!
Answer:
Mean: AB) 5.25
Median: E) 5
Mode: A) 2
Step-by-step explanation:
First, I am going to put the numbers in order from least to greatest. This will help us in finding the median and mode, but also can be easier to see if the mean we find makes sense.
➜ 1 2 2 2 2 2 3 3 4 5 5 6 6 7 8 8 9 9 10 11
Mean is the average of all of the numbers. We will add all the numbers together and then divide by the number of numbers.
1+2+2+2+2+2+3+3+4+5+5+6+6+7+8+8+9+9+10+11 = 105
105 / 20 = 5.25
Median is the middle number, when in order from least to greatest.
1 2 2 2 2 2 3 3 4 5 5 6 6 7 8 8 9 9 10 11
1 2 2 2 2 2 3 3 4 [tex]\boxed{5\;\;5}[/tex] 6 6 7 8 8 9 9 10 11
Our median is 5 (since there are two numbers, we find the average. 5 +5 = 10, 10 /2 = 5.).
Mode is the most common number, the number that shows up the most frequently.
This number is 2, it shows up 5 times.
Mode is 2 (A), Median is 5(E), and mean is 5.25(AB)
assume that arrivals occur according to a poisson process with an average of seven per hour. what is the probability that exactly two customers arrive in the two-hour period of time between a 2:00 p.m. and 4:00 p.m. (one continuous two-hour period)? b 1:00 p.m. and 2:00 p.m. or between 3:00 p.m. and 4:00 p.m. (two separate one-hour periods that total two hours)?
a) The probability that exactly two customers arrive between 2:00 p.m. and 4:00 p.m. is 0.0915 (or approximately 9.15%).
b) The probability of at least one customer arriving between 1:00 p.m. and 2:00 p.m. or between 3:00 p.m. and 4:00 p.m. is approximately 0.99999917.
For a Poisson process, the number of arrivals in a fixed time interval follows a Poisson distribution.
Let's denote the number of arrivals in a two-hour period as X.
Since the average number of arrivals per hour is 7, the average number of arrivals in a two-hour period is 14.
Therefore, we have λ = 14.
a) Probability of exactly 2 customers arriving between 2:00 p.m. and 4:00 p.m.:
Using the Poisson distribution formula, the probability of X arrivals in a two-hour period is:
[tex]P(X = x) = (e^{-\lambda} * \lambda^x) / x![/tex]
So, for X = 2, we have:
[tex]P(X = 2) = (e^{-14} * 14^2) / 2! = 0.0915[/tex] (rounded to four decimal places)
Therefore, the probability that exactly two customers arrive between 2:00 p.m. and 4:00 p.m. is 0.0915 (or approximately 9.15%).
b) Probability of at least one customer arriving between 1:00 p.m. and 2:00 p.m. or between 3:00 p.m. and 4:00 p.m.:
We can approach this problem by using the complementary probability. The complementary probability of at least one customer arriving in a two-hour period is the probability of no customers arriving in that period. Since the arrival rate is the same for each hour, we can divide the two-hour period into two one-hour periods and use the Poisson distribution formula for each period separately.
The probability of no customers arriving in a one-hour period with λ = 7 is:
[tex]P(X = 0) = (e^{-7}* 7^0) / 0! = 0.000911[/tex]
The probability of no customers arriving in a two-hour period is the product of the probabilities for each one-hour period:
P(no customers in two-hour period) = P(X = 0) * P(X = 0) = 0.000911 * 0.000911 = 8.30e-7
The complementary probability of at least one customer arriving in a two-hour period is:
P(at least one customer in two-hour period) = 1 - P(no customers in two-hour period) = 1 - 8.30e-7 = 0.99999917 (rounded to eight decimal places).
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The interval within which 95 percent of all possible sample estimates will fall by chance is defined as ______________.A. Lower confidence boundaryB. Upper confidence boundaryC. The sample mean +/- 1.96 standard errorsD. The Central Limit Theorem
The interval within which 95 percent of all possible sample estimates will fall by chance is defined as the sample mean +/- 1.96 standard errors.
C. The sample mean +/- 1.96 standard errors.
This is known as the confidence interval, and it is calculated by taking the sample mean and adding and subtracting 1.96 times the standard error of the sample.
This range provides a level of confidence that the true population parameter falls within this range, based on the sample data.
The Central Limit Theorem is a statistical concept that explains how sample means tend to follow a normal distribution, but it is not directly related to the calculation of confidence intervals.
The lower and upper confidence boundaries refer to the endpoints of the confidence interval.
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The interval within which 95 percent of all possible sample estimates will fall by chance. The correct answer is: C. The sample mean +/- 1.96 standard errors
The interval within which 95 percent of all possible sample estimates will fall by chance is defined as the "Upper and Lower Confidence Boundaries" or "Confidence Interval." This interval is calculated based on the sample mean and standard error, with the common formula being the sample mean +/- 1.96 standard errors for a 95% confidence interval.
This interval is often referred to as the 95% confidence interval. It is calculated by taking the sample mean and adding/subtracting 1.96 times the standard error. This range represents the boundary within which 95 percent of all possible sample estimates are expected to fall by chance.
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