-16 is the of x in the given expression.
To solve for x in the equation:
16x + 24/4 = -5(2 - 3x)
We can start by simplifying the equation using the order of operations (PEMDAS) and basic algebraic properties.
16x + 6 = -10 + 15x (distribute -5)
6 = -10 - x (move 15x to the left, and 16x to the right)
16 = -x (subtract 6 from both sides)
x = -16 (multiply both sides by -1)
Therefore, the solution to the equation is x = -16.
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Prove that there exist prime numbers with arbitrarily many 0's in its digits. (Hint: use Dirichlet's theorem on arithmetic progressions)
Dirichlet's theorem on arithmetic progressions states that for any two coprime positive integers a and d, there are infinitely many prime numbers of the form a + nd, where n is a non-negative integer. We can use this theorem to prove that there exist prime numbers with arbitrarily many 0's in its digits.
Let's consider the arithmetic progression 10^k, 10^k + 1, 10^k + 2, ..., 10^k + 9. This progression consists of all the positive integers with k+1 digits that end in a non-zero digit. Note that 10^k and 10^k + 1 are coprime, as are 10^k and 10^k + 2, and so on, up to 10^k and 10^k + 9. By Dirichlet's theorem, there are infinitely many primes of the form 10^k + nd, where n is a non-negative integer and d is any one of the 10 numbers 1, 2, ..., 9. Since 10^k has k+1 digits, we can choose k to be any positive integer, and thus there exist prime numbers with arbitrarily many 0's in its digits. For example, if we choose k = 1000, then there exist infinitely many prime numbers with at least 1000 zeros in its digits, since there are infinitely many primes of the form 10^1000 + nd, where d is any one of the 10 digits 1, 2, ..., 9.
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An inequality is shown.
27
7
n
⟩
4
3
Select all the values of n that make the inequality true
Group of answer choices
2
5
2
9
3
2
1
Answer:
The only value of n that makes the inequality true is 5.
Explanation:
To solve the inequality, we need to isolate n on one side of the inequality symbol. First, we can multiply both sides by 7/3 to get:
n > (4/3) × 27/7
Simplifying, we get:
n > 4
So any value of n greater than 4 would make the inequality true. Among the given choices, only 5 is greater than 4, so it is the only value that satisfies the inequality.
Hamburger Meat The meat department at a local supermarket specifically prepares its "1-pound" packages of ground beef so that there will be a variety of weights, some slightly more and some slightly less than 1 pound. Suppose that the weights of these "1- pound" packages are normally distributed with a mean of 1.00 pound and a standard deviation of .15 pound.
a. What proportion of the packages will weigh more than 1 pound?
b. What proportion of the packages will weigh between .95 and 1.05 pounds?
c. What is the probability that a randomly selected package of ground beef will weigh less than .80 pound?
d. Would it be unusual to find a package of ground beef that weighs 1.45 pounds? How would you explain such a large package?
(a) 50% of the packages will weigh more than 1 pound.
(b) 24.64% of the packages will weigh between .95 and 1.05 pounds.
(c) The probability that a randomly selected package of ground beef will weigh less than .80 pound is 9.18%.
(d) It would be unusual to find a package of ground beef that weighs 1.45 pounds. Such a large package could be explained by either an error in the packaging process or a deliberate attempt to provide larger packages to some customers.
a. To find the proportion of packages that weigh more than 1 pound, we need to calculate the area under the normal curve to the right of 1 pound. Using a standard normal table or calculator, we can find this probability to be:
P(Z > (1-1)/0.15) = P(Z > 0) = 0.5000
Therefore, 50% of the packages will weigh more than 1 pound.
b. To find the proportion of packages that weigh between .95 and 1.05 pounds, we need to calculate the area under the normal curve between these two values. Using a standard normal table or calculator, we can find this probability to be:
P((.95-1)/0.15 < Z < (1.05-1)/0.15) = P(-0.33 < Z < 0.33) = 0.3482
Therefore, 34.82% of the packages will weigh between .95 and 1.05 pounds.
c. To find the probability that a randomly selected package of ground beef will weigh less than .80 pound, we need to calculate the area under the normal curve to the left of .80 pound. Using a standard normal table or calculator, we can find this probability to be:
P(Z < (.80-1)/0.15) = P(Z < -1.33) = 0.0912
Therefore, there is a 9.12% chance that a randomly selected package of ground beef will weigh less than .80 pound.
d. It would be quite unusual to find a package of ground beef that weighs 1.45 pounds, as this is more than three standard deviations above the mean. The probability of finding a package that weighs 1.45 pounds or more can be calculated as:
P(Z > (1.45-1)/0.15) = P(Z > 2.67) = 0.0038
This is a very small probability, suggesting that such a large package is an outlier in the distribution. It could be due to a mistake in packaging or an intentional oversized package for a special order.
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Suppose you have an algorithm A that takes as input an array M[0,1,...,n - 1] of n integers. The algorithm is defined by two functionsf: Z → Zand g: Z x Z → Z. If n = 1, then the algorithm computes a function f (g), where is the single entry in the array, and returns this integer value. For larger values of n, the algorithm • computes two new arrays that start at positions i = 0 and [n/3 - 1] and that include [2n/3] elements. Thus, if n = 15, the new arrays would begin at positions 0 and 4 and contain 10 elements each • The algorithm then runs recursively on each subarray, and stores the value. This returns an ordered set of two integers, x, y,.
• The algorithm then computes g(x, y), and returns this value. We would like to write down a function (n) for the running time of this algorithm on inputs of arrays of n elements. Assume that computing f (9) and g(x, y) each cost only one operation. Counting all the operations for each step, which of the following recurrence relations would seem to fit? To make the problem easy to solve, you should assume that n = 3k for some non-negative integer Select one: a. t(1) = C1 and t(n) = 2t(n/2) + 1, for some positive constant C1 b.t(1) = C1, and t(n) = 2t(2n/3), for some positive constant C1. c. t(1) = C1, and t(n) = 2t(2n/3) + C2, for some positive constants C1, C2 d. t(1) = C1, and t(n) = 2t(2n/3) + C2n, for some positive constants C1, C2 e. t(1) = C1, and t(n) = 2t(n/3) + C2, for some positive constants C1, C2
The correct option is (c). t (1) = C1, and t(n) = 2t(2n/3) + C2, C1 and C2 are positive constants. Here's a step-by-step explanation:
1. When n = 1, the algorithm computes a function g (M [0])) and returns an integer value, which takes constant time, represented by C1.
2. For larger values of n, the algorithm divides the input array into two subarrays starting at positions i = 0 and [n/3 - 1], each containing [2n/3] elements.
3. It runs the algorithm recursively on each subarray, returning two integers x and y, and computes g(x, y).
4. Counting all the operations for each step, we can see that there are two recursive calls with inputs of size 2n/3, and one operation for computing g(x, y).
Therefore, the recurrence relation for the running time of this algorithm is:
t(1) = C1 (base case)
t(n) = 2t(2n/3) + C2 (recursive case)
C1 and C2 are positive constants.
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in 2012, gallup asked participants if they had exercised more than 30 minutes a day for three days out of the week. suppose that random samples of 100 respondents were selected from both vermont and hawaii. from the survey, vermont had 65.3% who said yes and hawaii had 62.2% who said yes. what is the value of the sample proportion of people from vermont who exercised for at least 30 minutes a day 3 days a week? group of answer choices unknown 0.6375 0.653 0.622
The value of the sample proportion of people from Vermont who exercised for at least 30 minutes a day, 3 days a week is 0.653.
We have,
Vermont had 65.3% of respondents who said yes to exercising for at least 30 minutes a day, 3 days a week.
To find the sample proportion, you can convert the percentage to a decimal by dividing the percentage by 100.
Step 1:
Convert the percentage to a decimal.
65.3 / 100 = 0.653
Thus,
The value of the sample proportion of people from Vermont who exercised for at least 30 minutes a day, 3 days a week is 0.653.
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mario has $759.60 in the bank after 2 years. assuming he made no additional deposits or withdrawls, what simple interest rate did the savings account pay?
The savings account paid a simple interest rate of 25.96%.
We can use the simple interest formula:
I = Prt
where I is the interest earned, P is the principal (initial amount deposited), r is the interest rate (in decimal form), and t is the time (in years).
The interest earned in 2 years is:
I = 759.60 - 500 = 259.60
Substituting the values into the formula, we get:
259.60 = 500 × r × 2
Simplifying and solving for r, we get:
r = 0.2596 or 25.96%
Therefore, the savings account paid a simple interest rate of 25.96%.
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mario has $759.60 in the bank after 2 years. assuming he made no additional deposits or withdrawls, what simple interest rate did the savings account pay? The initial amount deposited is $500
The long jump winner jumped 8 1/2 ft. Did the winner jump more than 100in
Answer:
Step-by-step explanation:
yes, he jumped more then 100 inches
Answer:
The winner did jump more than 100in
Step-by-step explanation:
[tex]8.5ft( \frac{12in}{1ft} ) = 102 \: in[/tex]
Please help 100 extra points
Justin wants to lake his iPod nnd is Nimendo
Switch on a car trip. An hour before they are
scheduled to leave, he realizes he forgot to charge them last night. At that point, he plugged in both devices so they can charge as long as possible before the trip. He knows (hat his IPad has 40%% of its battery life loft and that the battery charges by an additional 12 percentage points every 15 minutes.
His Nintendo Switch is new, so Justin doesn't know how fast it's charging but he recorded the battery charge for the first 30 minutes after he plugged it in below:
Time Charging (minutes)
0
10
20
30
Video Game Player Batter Charge (%)
20
32
44
56
. If Justin's family leaves as planned, what percent of the battery will be charged for each of the two devices when they leave? YOU MUST SHOW YOUR WORK FOR FULL CREDIT!
Nintendo Switch:
IPad:
. How much time would Justin need to charge the batter to 100% on both devices?
The time that it would take Justin to charge the batter to 100% on both devices will be 111.67 minutes
How to explain the TimeIt takes about 36.67 minutes to charge the Nintendo Switch entirely.
The iPad has a residual battery life of 40%, which means it must gain an additional 60% percent increase in energy.
Since we understand that the tablet powers up by approximately 12 percentage points every quarter of an hour, the estimated duration for one hundred percent charging is close to 75 minutes.
Consequently, Justin must energize both gadgets and will need nearly 111.67 minutes or almost two hours to accomplish this task completely.
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Which equation represents the graph? a graph of a line that passes through the points 0 comma negative 2 and 3 comma negative 1 y = −3x + 6 y equals negative one third times x plus 6 y equals one third times x minus 2 y = 3x − 2
The correct equation which represents the graph is,
⇒ y = 1/3x - 2
We know that;
The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
Two points on the line are (3, -1) and (0, -2).
Now,
Since, The equation of line passes through the points (3, -1) and (0, -2).
So, We need to find the slope of the line.
Hence, Slope of the line is,
m = (y₂ - y₁) / (x₂ - x₁)
m = (- 2 - (-1)) / (0 - 3)
m = - 1 / -3
m = 1/3
Thus, The equation of line with slope 1/3 is,
⇒ y - (-1)= 1/3 (x - 3)
⇒ y + 1 = 1/3x - 1
⇒ y = 1/3x - 2
Therefore, The equation of line passes through the points ((3, -1) and
(0, -2).will be;
⇒ y = 1/3x - 2
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You put $1000 into a savings account with a 8% interest rate compounded monthly. Your friend puts $2000 into a different account that accrues 5% interest compounded monthly. How many years will it take for your account to catch up to your friend's? Round your answer to the nearest tenth of a year
Using the compound interest formula A = P[tex](1 + r/n)^{(nt)}[/tex] it is deduced that t will take approximately 16.8 years for your account to catch up to your friend's account.
We can use the formula for compound interest to solve this problem:
A = P[tex](1 + r/n)^{(nt)}[/tex]
where:
A = the amount of money at the end of the investment period
P = the principal (initial amount)
r = the annual interest rate (as a decimal)
n = the number of times the interest is compounded per year
t = the time in years
For your account:
P = 1000
r = 0.08/12 = 0.00666667 (monthly interest rate)
n = 12 (compounded monthly)
A = P[tex](1 + r/n)^{(nt)}[/tex] = 1000[tex](1 + 0.00666667/12)^{(12t)}[/tex]
For your friend's account:
P = 2000
r = 0.05/12 = 0.00416667 (monthly interest rate)
n = 12 (compounded monthly)
A = P[tex](1 + r/n)^{(nt)}[/tex] = 2000[tex](1 + 0.00416667/12)^{(12t)}[/tex]
We want to find the time t when the two accounts have the same value:
1000[tex](1 + 0.00666667/12)^{(12t)}[/tex] = 2000[tex](1 + 0.00416667/12)^{(12t)}[/tex]
Dividing both sides by 1000 and simplifying, we get:
[tex](1 + 0.00666667/12)^{(12t)}[/tex] = 2[tex](1 + 0.00416667/12)^{(12t)}[/tex]
[tex](1.00055556)^{(12t)}[/tex] = 2[tex](1.00034722)^{(12t)}[/tex]
Taking the natural logarithm of both sides:
12t × ln(1.00055556) = ln(2) + 12t × ln(1.00034722)
12t = ln(2)/(ln(1.00034722) - ln(1.00055556))
t = 16.8 years (rounded to the nearest tenth of a year)
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draw the image of the following figure after a dilation centered at the origin with a scale factor of 3/5
The coordinate of the triangle after the dilation is (3, 3), (6, 3), (3, 6)
What would the coordinate after dilationFrom the question, we have the following parameters that can be used in our computation:
(5, 5), (10,5), (5, 10)
Scale factor = 3/5
The coordinate of the triangle after the dilation is calculated as
Image' = triangle * Scale factor
Substitute the known values in the above equation, so, we have the following representation
(5, 5), (10,5), (5, 10) * 3/5
Evaluate
(3, 3), (6, 3), (3, 6)
Hence, the image is (3, 3), (6, 3), (3, 6) and it is attached
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The radius of a cylindrical water tank is 6.5 ft, and its height is 10 ft. What is the volume of the tank?
Answer: 1327.3 feet cubed[tex]V=\pi\cdot r^2\cdot h\\V=\pi\cdot(6.5)^2\cdot10\\V=\pi\cdot 42.25\cdot10\\V=422.5\pi ft^3\\or\\V\approx 1327.3 ft^3[/tex]
Step-by-step explanation:
Volume of a cylinder:
Help me pls
Identify the vertex and axis of symmetry of each. Then sketch the graph.
The vertex and axis of symmetry of each function are as follows:
15. (2, -4)
16. -½x + ½
17. (-4, 3)
18. (-5, 2)
19. (-5, -3)
20. (-2, -1)
How did we get the values?15. f(x) = -3 (x - 2)² - 4
Rewrite the function
f(x)=-3x²+12x-16 Identify the coefficients
a=-3, b=12
Substitute the coefficients into the expression
X = — ¹²/2 x (-3) Solve the equation
X = 2
Evaluate the function for x = 2
f(x) = -3 (x-2)² - 4, x=2
Calculate the function value
f(2) = -4
The vertex is at (2, -4)
16. f(x) = - ¼x (x - 1)² + 4
Take the derivative
f'(x) = ᵈ/dx (-¼x x (x-1)² + 4)
Calculate
f'(x) = ᵈ/dx (— (x-1)²/4 + 4)
Use differentiation rules
f'(x) = ᵈ/dx ( (x-1)²/4) + ᵈ/dx (4)
Differentiate
f¹(x) = - ¼ x 2 (x - 1) + 0
Simplify
f'(x) = -½x + ½
17. f ( x ) = ¼ × (x + 4)² +3
Rewrite the function
f(x) = ¼x² + ⁸/₄x + ¹⁶/₄ + 3
Identify the coefficients
a= ¼, b = ⁸/₄
Substitute the coefficients into the expression
X = — (⁸/₄)/2 x ¼
Solve the equation
X= -4
Evaluate the function for x = -4
f ( x ) = ¼ × (x + 4)² +3, x = -4
f(-4) = 3
The vertex is at (-4, 3)
18. f (x) = ¼ × (x + 5)² + 2
Rewrite the function
f(x) = ¼x² + ¹⁰/₄x + ³¾
Identify the coefficients
a = ¼, b = ¹⁰/₄
Substitute the coefficients into the expression
x = (¹⁰/₄)/2 x ¼
Solve the equation
X= -5
Evaluate the function for x = -5
f (x) = ¼ × (x + 5)² + 2, x = -5
Calculate the function
f(-5) = 2
The vertex is at (-5, 2)
19. f(x) = -2(x+5)² - 3
Rewrite the function
f(x) = -2x² - 20x - 53
Identify the coefficients
a = -2, b = -20
Substitute the coefficients into the expression
X = — ²⁰/2 x (-2)
Solve the equation
X= -5
Evaluate the function for x = -5
f(x) = -2(x+5)² - 3, x = -5
Calculate
f (-5) = -3
The vertex is at (-5, -3)
20. f(x) = (x + 2)² - 1
Rewrite the function
f(x)= x² +;4x + 3
Identify the coefficients
a = 1, b = 4
Substitute the coefficients into the expression
x = — ⁴/2 x 1
Solve the equation
X = - 2
Evaluate the function for x= -2
f(x) = (x+2)² - 1, x = -2
Calculate the function value
f(-2) = -1
The vertex is at (-2, -1)
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A team of forest rangers notices a fire in the distance at an angle of depression (0) of 15
degrees. If the vertical distance of the observation station above the fire (FS) is 87 feet,
what is the horizontal distance (x) from the station to the fire? Round your answer to
the nearest tenth of a foot.
The horizontal distance from the observation station to the fire is approximately 290.4 feet.
In this problem, we are given the angle of depression (θ) and the vertical distance (FS) from an observation station to a fire. We need to find the horizontal distance (x) from the station to the fire.
To solve the problem, we can use the trigonometric function tangent, which relates the opposite side to the adjacent side of a right triangle. In this case, the opposite side is the vertical distance FS, and the adjacent side is the horizontal distance x.
We can set up the following equation:
tan(θ) = FS / x
We know that θ = 15 degrees and FS = 87 feet, so we can plug these values into the equation:
tan(15) = 87 / x
Next, we can solve for x by multiplying both sides of the equation by x and dividing both sides by tan(15):
x = 87 / tan(15)
Using a calculator, we can evaluate the expression and get:
x ≈ 290.4 feet
We round our answer to the nearest tenth of a foot, which is why we keep one decimal place.
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Data summaries
BUTTERFLIES: Tania recorded the number of butterflies she saw on her daily runs each day
for a week. The numbers are: 1, 8, 2, 2, 5, 6, and 4. Find the mean, median, and mode of the
data. Which measure(s) are appropriate to accurately summarize the data?
The measures that are appropriate to accurately summarize the data are the mean and the median
Finding the mean, median, and mode of the dataFrom the question, we have the following parameters that can be used in our computation:
1, 8, 2, 2, 5, 6, and 4
When sorted we have
1, 2, 2, 4, 5, 6, 8
The mean is calculated as
Mean = (1 + 2 + 2 + 4 + 5 + 6 + 8)/7
Mean = 4
The median is the middle value
So, we have
Median = 4
The mode is the data with the highest frequency
So, we have
Mode = 2
Lasltly, the measures that are appropriate to accurately summarize the data are the mean and the median
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find the missing side length assume that all intersecting sides meet at right angles be sure to include the correct unit in your answer
The addition is one of the four fundamental mathematical operations. The length of the missing side length is 6ft.
Since,
The addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. When two whole numbers are added together, the total quantity or sum of those values is obtained.
In the given diagram, the line AB, CD, and EF are parallel to each other, therefore, we can write the length of AB as,
Length of AB = Length of EF - Length of CD
= 13ft - 7ft
= 6ft
Hence, the length of the missing side length is 6ft.
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use the ratio test or the root test to determine if the following series converges absolutely or diverges. 6k^4 k
The limit is equal to 1, so the Ratio Test is inconclusive. Further tests would be required to determine if the series converges absolutely or diverges.
To use the ratio test, we take the limit of the absolute value of the ratio of the (k+1)th term to the kth term:
lim as k approaches infinity of |(6(k+1)^4)/(6k^4)|
Simplifying this expression, we get:
lim as k approaches infinity of |(k+1)^4/k^4|
Using L'Hopital's rule, we can evaluate this limit:
lim as k approaches infinity of |4(k+1)^3/4k^3|
lim as k approaches infinity of |(k+1)/k|^3
Since the limit is less than 1, by the ratio test, the series converges absolutely.
Alternatively, we can use the root test, which involves taking the kth root of the absolute value of the kth term:
lim as k approaches infinity of |(6k^4 k)^(1/k)|
Simplifying this expression, we get:
lim as k approaches infinity of |6^(1/k) * k^(4+1/k)|
The exponent 4+1/k approaches 4 as k approaches infinity, so we can ignore the 1/k term. Taking the limit of just the k^(4) term, we get:
lim as k approaches infinity of |6^(1/k) * k^4|^(1/k)
Using the fact that lim as k approaches infinity of 6^(1/k) = 1 and lim as k approaches infinity of k^(4/k) = 1, we get:
lim as k approaches infinity of |6^(1/k) * k^4|^(1/k) = 1
Since the limit is less than 1, by the root test, the series converges absolutely.
To determine if the given series converges absolutely or diverges, we can use the Ratio Test. The series is given as:
Σ(6k^4 * k) for k = 1 to ∞
First, let's simplify the series:
Σ(6k^5) for k = 1 to ∞
For the Ratio Test, we need to compute the limit as k goes to infinity of the ratio of consecutive terms:
lim (k → ∞) (|a_(k+1)| / |a_k|)
For our series, a_k = 6(k+1)^5 and a_(k+1) = 6k^5. So we have:
lim (k → ∞) (|6(k+1)^5| / |6k^5|)
We can simplify by canceling the common factor of 6:
lim (k → ∞) ((k+1)^5 / k^5)
Now, let's take the limit:
lim (k → ∞) (1 + 1/k)^5 / 1 = 1^5 / 1 = 1
For the Ratio Test, if the limit is less than 1, the series converges absolutely; if it is equal to 1, the test is inconclusive; if it is greater than 1, the series diverges.
In this case, the limit is equal to 1, so the Ratio Test is inconclusive. Further tests would be required to determine if the series converges absolutely or diverges.
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The school day is 7 hours long. If recess lasts 1/4 hour, what fraction of the school day does recess make up
Answer:
recess makes up 1/28 of the school day.
Step-by-step explanation:
a = . Which of the following equals a in this equation? (4 points) Group of answer choices 2
The solution that equals a in this equation is [tex]a = 3 / 8[/tex]. The Option B.
What is an expression?An expression means collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that:
The expression is 1 over 4a = 2 over 3.
We can then simplify as:
1 / 4a = 2 / 3
Make a cross multiplacation, we get:
3 = 2 x 4a
3 = 8a
a = 3 / 8
Therefore, the solution of the expression is a = 3 / 8
Full question "1 over 4a = 2 over 3. Which of the following equals a in this equation? 1/6, 3/8 11/12, 2 and 2/3"
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The map below shows the town of Cedarville. In Cedarville, 2\3 of the area of the town is east of the river. Out of that area, is 3\5 north of Main Street. What fraction of the total area of Cedarville is in the shaded area that is both east of the river and north of Main Street? What fraction of the total area of Cedarville is in the shaded area that is both east of the river and north of Main Street
The total area of Cedarville is in the shaded area that is both east of the river and north of Main Street is 6/10. Option C
What is the fraction?We know that a fraction can be seen as a part of the whole. Thus when we talk about a fraction, we mean the part that we have taken out of the whole.
If we want to get the fraction of the total area of Cedarville is in the shaded area that is both east of the river and north of Main Street, then we have to count all the boxes and this would give us ten.
Six out of this ten are shaded thus the fraction of the total area of Cedarville is in the shaded area that is both east of the river and north of Main Street is 6/10.
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The number of calls coming in to an office follows a Poisson distribution with mean 5 calls per hour. What is the probability that there will be exactly 7 calls within the next three hours?
a .0.010
b. 0.104
c. 0.090
d.0.071
The probability of receiving exactly 7 calls in the next three hours is approximately 0.104, which corresponds to answer (b).
To solve this problem, we need to use the Poisson probability formula, which is:
P(X = k) = (e^(-λ) * λ^k) / k!
where X is the number of calls, k is the desired number of calls (7 in this case), λ is the average rate of calls per time period (5 calls per hour), and e is the base of the natural logarithm (approximately 2.71828).
Since we want to know the probability of receiving 7 calls in 3 hours, we need to adjust our λ value accordingly. Since the rate is 5 calls per hour, the average rate for 3 hours would be 5 * 3 = 15 calls.
Now, we can plug these values into the formula:
[tex]P(X = 7) = (e^(-15) * 15^7) / 7![/tex]
P(X = 7) ≈ 0.104
So, the probability of receiving exactly 7 calls in the next three hours is approximately 0.104, which corresponds to answer (b).
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Make sure to round the answer
•thank you if you help :D
Answer:
Its B!
Step-by-step explanation:
:)
(8 x 10,000) + (5 x 1,000) + (3 x 100) +
(8 x 1)?
Step-by-step explanation:
(8 x 10,000=80,000)
(5 x 1,000=5,000)
(3 x 100=300)
(8 x 1=8)
80,000+5,000+300+8
Answer:
85308
Step-by-step explanation:
[tex]8*10000=80000[/tex]
[tex]5*1000=5000[/tex]
[tex]3*100=300[/tex]
[tex]8*1=8[/tex]
[tex]80000+5000+300+8=85308[/tex]
Hope this helps :)
Pls brainliest...
someone, please help! giving brainliest and 100 points!
box and whisker method.
The five-number summary is (7, 9, 13, 21.5, 24).
A five-number summary is a set of statistics that describes a data set. It consists of the minimum, first quartile, median, third quartile, and maximum of the data12. A box plot is a graphical display of the five-number summary using a number line and a rectangular box13.
To find the five-number summary and make a box plot for your data set, you need to follow these steps:
Arrange the data in ascending order: 7, 8, 10, 10, 13, 16, 19, 23, 24
Find the minimum and maximum values: Minimum = 7, Maximum = 24
Find the median (the middle value) of the data: Median = 13
Find the first quartile (the median of the lower half of the data): First quartile = 9
Find the third quartile (the median of the upper half of the data): Third quartile = 21.5
Therefore, by the number line the answer will be (7, 9, 13, 21.5, 24).
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a sample of 900 computer chips revealed that 46% of the chips do not fail in the first 1000 hours of their use. the company's promotional literature states that 44% of the chips do not fail in the first 1000 hours of their use. the quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. find the value of the test statistic. round your answer to two decimal places.
Therefore, the value of the test statistic is 2.02 (rounded to two decimal places).
To test the claim that the actual percentage of computer chips that do not fail in the first 1000 hours of their use is different from the stated percentage of 44%, we can use a hypothesis test with the following null and alternative hypotheses:
Null hypothesis: The proportion of computer chips that do not fail in the first 1000 hours of their use is equal to 44%.
Alternative hypothesis: The proportion of computer chips that do not fail in the first 1000 hours of their use is not equal to 44%.
We can use a normal approximation to the binomial distribution to calculate the test statistic:
z = (p - P) / √(P(1-P)/n)
where:
p = sample proportion = 0.46
P = hypothesized proportion = 0.44
n = sample size = 900
Plugging in the values, we get:
z = (0.46 - 0.44) / √(0.44*0.56/900)
z = 2.02
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If a population is experiencing exponential growth, what is the size of the NEXT generation of a population that is currently at 700 individuals and is growing at a rate of 1.4
4) Answer ALL parts of the question. Show your calculations. To make a profit on a given day a car dealership needs to sell at least 4 cars. From experience they know that 70% of those who enter the dealership on a Friday will buy a car. Assume that there is sampling with replacement (so when a car is sold it is replaced), that each car is identical, and that all trials are independent and have the same probability of success. a. Under what conditions can you estimate the Hypergeometric Distribution with the Binomial Distribution? 5 marks b. If 4 customers enter the dealership on Friday, what is the probability that the dealership will make a profit? 7 Marks
The probability that the dealership will make a profit if 4 customers enter on Friday is approximately 24.01%.
a. You can estimate the Hypergeometric Distribution with the Binomial Distribution under the following conditions:
1. The sample size (n) is relatively small compared to the population size (N).
2. The probabilities of success (p) and failure (q) remain approximately constant throughout the sampling process.
In this case, since we're assuming sampling with replacement, identical cars, and independent trials with constant probability, it's appropriate to use the Binomial Distribution.
b. To calculate the probability that the dealership will make a profit if 4 customers enter on Friday, we can use the Binomial Distribution formula:
P(X = k) = (nCk) * (p^k) * (q^(n-k))
Where:
- P(X = k) is the probability of exactly k successes (cars sold)
- nCk is the number of combinations of n items taken k at a time
- p is the probability of success (car sold)
- q is the probability of failure (car not sold)
- n is the number of trials (customers)
- k is the number of successes (cars sold)
Here, n = 4, p = 0.70, and q = 1 - p = 0.30. We need to find the probability of selling at least 4 cars (k ≥ 4) to make a profit:
P(X ≥ 4) = P(X = 4)
P(X = 4) = (4C4) * (0.70^4) * (0.30^0)
P(X = 4) = 1 * (0.2401) * (1)
P(X = 4) = 0.2401
Therefore, the probability that the dealership will make a profit if 4 customers enter on Friday is approximately 24.01%.
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Find each missing side then find the corresponding letters for each answer
The missing sides are represented as;
AC = 4√2 O.
AB = 4 M
DE = 6√2 L
DF = 6√2 L
How to determine the value
To determine the value of the missing sides, we need to note the following trigonometric identities and their ratios;
sin θ = opposite/hypotenuse
cos θ = adjacent/hypotenuse
tan θ = opposite/adjacent
From the information given, we have that;
cos 45 = 4/AC
cross multiply the values
AC = 4÷ 1√2
Multiply the values
AC = 4× √2/1
Multiply the values
AC = 4√2
tan 45 = AB/4
AB = 4
To determine the values
sin 45 = DE/6
DE = 6√2
Then,
DF = 6√2
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find the dimensions of the rectangle meeting the specified conditions.the perimeter is 78 meters and the length is 3 meters greater than the width.
The dimensions of the rectangle are length = 21 meters and width = 18 meters.
To find the dimensions of the rectangle meeting these conditions, we first need to set up an equation based on the given information. We know that the perimeter is 78 meters, so we can use the formula for the perimeter of a rectangle:
Perimeter = 2(length + width)
Substituting in the given information, we get:
78 = 2(3 + width + width)
Simplifying, we can combine like terms:
78 = 2(3 + 2width)
78 = 6 + 4width
Subtracting 6 from both sides:
72 = 4width
Dividing by 4:
width = 18
So we know the width of the rectangle is 18 meters. We also know that the length is 3 meters greater than the width, so:
length = width + 3 = 18 + 3 = 21
Therefore, the dimensions of the rectangle meeting the specified conditions are:
width = 18 meters
length = 21 meters
To find the dimensions of the rectangle meeting the specified conditions, we'll use the information given: the perimeter is 78 meters and the length is 3 meters greater than the width.
Step 1: Write down the formula for the perimeter of a rectangle.
Perimeter (P) = 2(Length (L) + Width (W))
Step 2: Substitute the given values and conditions into the formula.
78 = 2(L + W)
Given that the length is 3 meters greater than the width, we can write L = W + 3.
Step 3: Substitute the expression for L in terms of W into the perimeter formula.
78 = 2((W + 3) + W)
Step 4: Solve the equation for W.
78 = 2(2W + 3)
39 = 2W + 3
36 = 2W
W = 18 meters
Step 5: Find the length (L) using the expression L = W + 3.
L = 18 + 3
L = 21 meters
So, the dimensions of the rectangle are length = 21 meters and width = 18 meters.
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Use addition to rewrite the subtraction expression below without changing the digits. Do not solve.
-14 - (-12)
The value of the given expression is -2.
The given expression is -14-(-12).
Subtraction is the process of taking away a number from another. It is a primary arithmetic operation that is denoted by a subtraction symbol (-) and is the method of calculating the difference between two numbers.
Here, -14+12 (Because -×- = +)
= -2
Therefore, the value of the given expression is -2.
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