The probability of randomly selecting a girl is 0.606. the correct option is (C).
Given that, Total newborn babies = 850
No. of boys = 335
We need to find the probability of randomly selecting a girl baby from this population of 850 babies.
Let G be the no. of girls in the population. Then, G + 335 = 850=> G = 850 - 335=> G = 515
Therefore, the number of girls in the population is 515. Hence, the probability of randomly selecting a girl from the population is:
P (girl) = No. of girls / Total newborn babies= 515 / 850= 0.606
Thus, the correct option is (c) 0.606.
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A/C
DVD Power Leather
Player Mirror Seats
Bucket
Seats
Power
Sunroof
Average
Model Retail
Value
4. V6 four-dr
a. $
5. V6 four-dr a.
6. V8 four-dr a.
Yes
Average
Mileage Retail
Price
35,000 b. $
58,400 b.
80,255 b.
No
Yes
Yes
No
No
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
7. Monica Rizzo wants to buy a
4-year-old V6 four-door sedan
that has 52,686 miles. It has
manual transmission, a DVD
player, leather seats, front
bucket seats, and power
sunroof but no air conditioning. Ee
8. Kurt Sorensen is looking at a
4-year-old V8 four-door sedan
that has 80,575 miles. It also has
a DVD player, power mirrors,
leather seats, front bucket seats,
and a power sunroof. Asunno
The cοrrect answer is Nο. The prices οf fοur-year-οld vehicles with a V6 and V8 engine vary greatly, depending οn the make and mοdel, mileage, and any additiοnal features.
What is an engine?An engine is a machine that cοnverts energy intο mechanical mοtiοn. It is a device that creates thrust οr pοwer thrοugh the cοnversiοn οf energy frοm fuel, such as gasοline, diesel, οr natural gas. Engines are used in a variety οf applicatiοns, such as in cars, bοats, planes, and electric generatοrs. They are alsο used in industrial machinery and manufacturing plants. Engines prοvide the pοwer that drives numerοus types οf transpοrtatiοn and prοductiοn.
Mοnica Rizzο's V6 fοur-dοοr sedan with a DVD player, leather seats, frοnt bucket seats, and pοwer sunrοοf but nο air cοnditiοning wοuld have an average retail value οf arοund $35,000. Kurt Sοrensen's V8 fοur-dοοr sedan with the same features, hοwever, wοuld have an average retail value οf arοund $58,400. The difference in value is largely due tο the V8 engine, which has mοre pοwer and thus requires mοre fuel. The additiοnal features alsο affect the value, but the engine is the biggest factοr.
Therefοre, Kurt Sοrensen will have tο pay significantly mοre fοr his V8 sedan than Mοnica Rizzο will have tο pay fοr her V6 sedan.
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A young boy ask his mother to get 5 game boy cartridges from his collection of 10 arcade and 5 sports games. How many ways are there that his mothercan get 3 arcades in 2 sports game
There are 1200 ways for the boy's mother to get 3 arcades and 2 sports games from his collection.
We can use the combination formula which is:
nCr = n! / (r! * (n-r)!)
where n is the total number of items, r is the number of items to choose, and ! denotes the factorial function.
In this case, we want to choose 3 arcade games and 2 sports games from a collection of 10 arcade games and 5 sports games. So, we have:
Number of ways to choose 3 arcade games from 10 arcade games = 10C3 = 120
Number of ways to choose 2 sports games from 5 sports games = 5C2 = 10
Therefore, the total number of ways to choose 3 arcade games and 2 sports games is:
120 * 10 = 1200
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Mrs Patel and Mrs rose both get paid 25,800 a year. Mrs Patel receives a 2. 5 % rise. Mrs rose gets a pay rise of £55 per month. Who receives the greater pay rise ?
Mrs. Rose receives the greater pay rise of £660 per year compared to Mrs. Patel's pay rise of £645.
To compare the pay rise for Mrs Patel and Mrs Rose, we need to calculate the actual amount of the pay rise for each of them.
For Mrs Patel, her pay rise is 2.5% of her current salary of £25,800:
Pay rise for Mrs Patel = 2.5% of £25,800 = £645
For Mrs. Rose, her pay rise is £55 per month, which is:
Pay rise for Mrs. Rose = £55 x 12 = £660 per year
Comparing the two pay rises, we see that Mrs. Rose receives a greater pay rise of £660 per year, compared to Mrs. Patel's pay rise of £645. Therefore, Mrs. Rose receives the greater pay rise.
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and |q1| > |q2| attract each other with a force of magnitude 90.4 mn when separated by a distance of 4.64 m . the spheres are then brought together until they are touching, enabling the spheres to attain the same final charge q.
The final charge of the spheres when they are touching after calculated using Coulomb's law , is 1.24 * 10^-6 C
According to the given information, two charged spheres with charges |q1| > |q2| attract each other with a force of magnitude 90.4 mn when separated by a distance of 4.64 m. When the spheres are brought together until they are touching, they attain the same final charge q.
We can use Coulomb's law to find the final charge q. Coulomb's law states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, Coulomb's law is expressed as:
F = k * (q1 * q2) / r^2
Where F is the force between the charged particles, k is Coulomb's constant (8.99 * 10^9 N*m^2/C^2), q1 and q2 are the charges of the particles, and r is the distance between them.
We can rearrange the equation to solve for q:
q = sqrt(F * r^2 / k)
Plugging in the given values:
q = sqrt(90.4 * 10^-6 N * (4.64 m)^2 / (8.99 * 10^9 N*m^2/C^2))
q = 1.24 * 10^-6 C
Therefore, the final charge of the spheres when they are touching is 1.24 * 10^-6 C
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ABCD is a square. A is the point (-2,0)and C is the point (6,4). AC and BD are diagonals of the square which intersect at M.
Find the coordinates of M, B, and D
The coordinates of M, B, and D of a square with vertices A(-2,0) and C(6,4) where AC and BD diagonals intersect at M are M(2,2), B(6,-8), and D(-2,8), respectively.
To locate the coordinates of M, we will first find the midpoint of AC, which is also the middle of the square. The midpoint of AC is ((-2+6)/2, (0+4)/2), which simplifies to (2,2).
Hence, M is in the middle of the square. To locate the length of a side of the square, we are able to use the distance formula.
The distance between a and C is √((6-(-2))² + (4-0)²), which simplifies to √(64+16), that is 8. Accordingly, each side of the square has a length of 8. Given that M is in the middle of the square, we can use this truth to discover the coordinates of B and D.
Because B and D are on opposite sides of M, their x-coordinates and y-coordinates should differ via 8. Seeing that a is at (-2,0), B needs to be 8 units to the proper and 8 units down, so B is at (6, -8). Further, on the grounds that c is at (6,4), D should be 8 gadgets to the left and 8 units up, so d is at (-2, 8).
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(2 A football team tries to move the ball forward as many yards as possible on each play, but sometimes they end up behind where they started. The distances, in yards, that a team moves on its first five plays are 2, - 1, 4, 3, and - 5. A positive number indicates moving the ball forward, and a negative number indicates moving the ball backward.
(1)
Which number in the list is the greatest?
(2)
What is a better question to ask to find out which play went the farthest from where the team started?
(3)
The coach considers any play that moves the team more than 4 yards from where they started a "big play. Which play(s) are big plays?
4 is bigger than the other numbers in the list, it is the biggest number. 2. "What is the absolute value of the largest distance travelled on a single play?" is a better question,
What is the distinction between vector quantities' magnitude and direction?The size or amount of a vector quantity is referred to as its magnitude, and its direction is referred to as its orientation or angle. For instance, the magnitude of the vector quantity of velocity refers to the speed, or how quickly an item is travelling, whereas the direction refers to the direction in which the object is going. While direction is often represented by a vector, which includes both magnitude and direction, magnitude is typically represented by a scalar, which is a single integer that reflects the magnitude of the quantity.
We only need to compare the numbers against one another to determine which is the highest number in the list. As 4 is bigger than the other numbers in the list, it is the biggest number.
(2) "What is the absolute value of the largest distance travelled on a single play?" is a better question to ask in order to determine which play took the team the furthest from its starting point. Regardless of the direction, the absolute number will show us the size of the distance travelled.
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Amanda is planning a graduation party for her son, who has just finished 8th grade. She has a party budget that is broken down into 5 categories: venue, invitations, food, entertainment, and decorations. Amanda wants to spend 5/24 of her budget on the venue, 1/16 on invitations, 1/4 on food, 3/16 on decorations, and the rest of her budget on entertainment. What fraction of amanda’s budget can she spend on entertainment?
Amanda can spend 9/48 of her budget on entertainment, which can be simplified to 3/16.
What is expression ?In mathematics, an expression is a combination of numbers, symbols, and/or operators that represents a mathematical quantity or relationship. Expressions can be composed of variables, constants, and mathematical operations, such as addition, subtraction, multiplication, and division, as well as functions and other mathematical constructs.
According to the given information:The fractions of Amanda's budget allocated to each category are:
Venue: 5/24
Invitations: 1/16
Food: 1/4
Decorations: 3/16
The sum of these fractions is:
5/24 + 1/16 + 1/4 + 3/16 = 15/48 + 3/48 + 12/48 + 9/48 = 39/48
This means that Amanda has allocated 39/48 of her budget to these four categories. To find out what fraction of her budget she can spend on entertainment, we need to subtract this fraction from 1 (since the remaining fraction is what she can spend on entertainment):
1 - 39/48 = 9/48
Therefore, Amanda can spend 9/48 of her budget on entertainment, which can be simplified to 3/16.
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A quadratic function y=f(x) is plotted on a graph and the vertex of the resulting parabola
(−4,−5). What is the vertex of the function defined as g(x)= f(-x)−4?
Answer:
(-2,6)
Step-by-step explanation:
y=f(x) has vertex (-4,6)
g(x)=-f(x-2) shifts the graph 2 units to the right, not to the left, and the graph is reflected over the x-axis
therefore the vertex is (-2,6) and the reflection over the x-axis has no affect on the vertex
. Determine the number of ways in which 2023 can be written as a1 + a2 + a3 + · · · + an where n ≥ 2 is a positive integer, a1 ≤ a2 ≤ a3 ≤ · · · ≤ an are positive integers, and a1 ≥ an−1
Given that, 2023 can be written as a1 + a2 + a3 + · · · + an where n ≥ 2 is a positive integer, a1 ≤ a2 ≤ a3 ≤ · · · ≤ an are positive integers, and a1 ≥ an−1. We need to determine the number of ways in which 2023 can be written in such a manner.
Let's apply the formula for finding the number of ways to represent an integer, where each term in the sum is an increasing sequence of positive integers.
In general, the formula for the number of ways to represent n is the number of partitions of n into an increasing sequence of positive integers. Let p(n) denote the number of partitions of n into an increasing sequence of positive integers.
Then, the number of ways to represent n as an increasing sequence of positive integers is given by p(n) - 1, as we cannot use the representation where n is the only term in the sum.
If we find p(2023), we can find the number of ways to represent 2023 as an increasing sequence of positive integers. Therefore, p(2023) - 1 is the required number of ways to represent 2023.
Let's calculate p(2023). The easiest way to calculate p(2023) is by generating functions. Since we are looking for an increasing sequence, we can use the formula for the generating function for partitions into distinct parts, which is:
(∑n=0∞xn)/(1−x)=1+x+x2+x3+x4+⋯.
We can replace x^n in the numerator with a generating function for the sum of the partitions of n into increasing parts to get the desired generating function.
(∑n=0∞x(n2+n)/2)/(1−x)=1+x+2x2+3x3+4x4+⋯.
The numerator in the generating function is (∑n=0∞x(n2+n)/2)=(∑n=0∞x(n2/2+n/2))=(∑n=0∞x(n/2)2+(1/4)(n+1/2))=(∑n=0∞(x1/4)n(n+1)+(x1/4)n+1/2)/2. The numerator is a sum of two geometric series, so we can simplify it.
(∑n=0∞(x1/4)n(n+1)+(x1/4)n+1/2)/2=(1/(1−x/4))^2+(x/2(1−x/4)^2).
(x/2(1−x/4)^2)=x(1/(1−x/4))^2−(x/2)/(1−x/4).
Therefore,
(∑n=0∞xn(n+1)/2)/(1−x)=p(0)+p(1)x+p(2)x2+p(3)x3+⋯=((1/(1−x/4))^2)−(x/2(1−x/4)^2).
The coefficient of x^2023 is x^2023−2−x/2(1−x/4)^2. Since x^2023−2=691104804/4^2, x^2022^2=−2022/4, and x^2021^2=303805/16, the required number of ways to represent 2023
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Point P is plotted on the number line. What number is represented by point P? P 5 * 10 ^ - 3; 6 * 10 ^ - 3
For a point P plotted on a given number line, the number represented by the point P is 5.80⁻³.
What is a number line?A number line is a linear visual representation of numbers and integers. This line is used to compare equally spaced numbers on an infinity line that extends horizontally or vertically on either side. A number line shows point values and equal divisions on the line. Between point 5.10⁻³ and point 6.10⁻³ there are 10 evenly spaced points.
Counting from the left, it looks like this:
5.10⁻³, 5.20⁻³, 5.30⁻³, 5.40⁻³, 5.50⁻³, 5.60⁻³, 5.70⁻³, 5.80⁻³, 5, 90⁻³, 6.00⁻³, 6.10⁻³.
Point P drops to 5.80⁻³, so the value of point P is 5.80⁻³.
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The complete question is as follows:
The empirical rule, also known as the three-sigma rule or the 68-95-99.7 rule, provides a quick estimate of the spread of data in a normal distribution given the mean and standard deviation. Specifically, the empirical rule states that for a normal distribution:
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.
Almost all (99.7%) of the data will fall within three standard deviations of the mean.
The empirical rule is used as a rough gauge of normality. When a number of data points fall outside the three standard deviation range, it can indicate non-normal distributions.
68% of the data will fall within one standard deviation, 95% of the data will fall within two standard deviations and 99.7% of the data will fall within three standard deviations of the mean.
The empirical rule, which is also referred to as the three-sigma rule or the 68-95-99.7 rule, gives a rapid estimate of the distribution of data in a normal distribution, provided the mean and standard deviation. The empirical rule describes that in a normal distribution: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.99.7% of the data will fall within three standard deviations of the mean.This empirical rule is useful in determining whether the data is roughly normally distributed. When a number of data points fall outside the three standard deviation range, it indicates non-normal distributions. Consequently, the empirical rule is a valuable tool for approximating normal distributions, but it is important to remember that it is just an approximation, and not all normal distributions will follow this rule exactly.
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3) When 100 coins are tossed find the probability that exactly 35 will be heads (numerical answer followed by Matlab code), assuming the number of experiments is 100000.
Write a matlab code please
This program creates [tex]N=100000[/tex] trials in which [tex]n=100[/tex] coins are tossed, and it counts the trials in which precisely [tex]k=35[/tex] heads are thrown. This code's output will be the calculated probability of receiving [tex]35[/tex] heads.
What are examples and probability?It is based on the possibility that something will materialize. The fundamental underpinning of maximum possible is just the explanation of likelihood. For instance, while flipping a coin, there is a 12-percent probability that it will land on its head.
How should a novice compute probability?Determine the number of alternative ways to roll a 4 as well as multiply it by the overall number of outcomes to determine the likelihood of the event occurring.
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△ABC and △DEF are similar triangles. Find BC.
Answer:
5 units
Step-by-step explanation:
We know that Triangles ABC and DEF are similar, therefore their values will be Equal
So , x + 7 + x - 4 = 12 + 5
2x + 3 = 15
2x = 15-3
2x = 12
x = 6
So in Triangle ABC , AC = x + 7 = 6 + 7 = 13
Therefore, by Pythagorean Therom,
BC^2 + AB^2 = AC^2
BC^2 + 144 = 169
BC^2 = 169 -144 = 25
BC = [tex]\sqrt{25} = 5[/tex]
Hope it helps.
Question 4
The area of a rectangular picture frame is 54 in2. The length of the frame is 3 feet
longer than the width. What are the dimensions of the frame?
O 3 in; 18 in
O 6 in; 9 in
O4 in; 7 in
O9 in; 12 in
Using Algebraic equations, the dimensions of the frame are 6in: 9 in.
The word "area" refers to a free space. A shape's length and width are used to compute its area. Unidimensional length is expressed in terms of feet (ft), yards (yd), inches (in), etc. But a shape's area is a two-dimensional measurement. Hence, it is expressed in square units such as square inches (in2), square feet (ft 2), square yards (yd2), etc.
Given, the area of the rectangular picture frame is 54 in².
length of the frame is 3 feet longer than the width,
Let us assume width = x
length of the frame will be = x + 3,
Area of rectangle = length × breadth
⇒ 54 = (x) (x + 3)
⇒ 54 = x² + 3x
Now, factorizing the given equation,
x² + 3x - 54
x² + 9x - 6x - 54
x(x + 9) -6 (x + 9)
(x + 9) (x - 6)
The value of x will be x = -9 and x = 6
As the negative length of the rectangle is not possible, we will consider, x = 6 and width = 9,
∴ The length of the rectangle = 6 inch,
Width of the rectangle will be = 6 + 3 = 9 inch.
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#2. Chelsey has 18 coins all nickels and quarters. The dollar value of her coins is $2.10. Her brother
Alex has 1.5 times the number of nickels Chelsey has but only 2/3 of the number of quarters. What is the
dollar value of Alex's coins?
Let's use variables to represent the number of nickels and quarters Chelsey has.
Let x be the number of nickels that Chelsey has, and let y be the number of quarters that she has. From the problem statement, we know that:
x + y = 18 (Chelsey has 18 coins in total)
0.05x + 0.25y = 2.10 (the total value of her coins is $2.10)
We can use these equations to solve for x and y.
First, we can solve for x in terms of y from the first equation:
x = 18 - y
Substituting this expression for x into the second equation, we get:
0.05(18 - y) + 0.25y = 2.10
Simplifying this equation, we get:
0.9 - 0.05y + 0.25y = 2.10
0.2y = 1.2
y=6
So Chelsey has 6 quarters. Substituting this value of y back into the first equation, we get:
x + 6 = 18
x = 12
So Chelsey has 12 nickels.
Now we can move on to Alex's coins. We know that he has 1.5 times the number of nickels that Chelsey has, which is:
1.5 * 12 = 18
And he has 2/3 of the number of quarters that Chelsey has, which is:
2/3 * 6 = 4
Therefore, Alex has 18 nickels and 4 quarters.
The dollar value of Alex's coins is:
0.05(18) + 0.25(4) = 0.90 + 1.00 = $1.90
So the dollar value of Alex's coins is $1.90.
A child has three bags of fruits in which Bag 1 has 5 apples and 3 oranges, Bag 2 has 4 apples and 5 oranges, and Bag 3 has 2 apples and 3 oranges. One fruit is drawn at random from one of the bags. Calculate the probability that the chosen fruit was an orange and was drawn from Bag 2
The probability that the chosen fruit was an orange and was drawn from Bag 2 is approximately 0.269 or 26.9%.
There are three bags of fruits with different numbers of apples and oranges in each bag. We need to calculate the probability that the fruit drawn is an orange and was drawn from Bag 2.
We can use Bayes' theorem to find the conditional probability of an event, given that another event has already occurred. Let O be the event that an orange is drawn and B2 be the event that the fruit is drawn from Bag 2.
Using Bayes' theorem, we have:
P(B2|O) = P(O|B2) * P(B2) / P(O)
We need to calculate P(O|B2), P(B2), and P(O) to find P(B2|O).
P(O|B2) is the probability that an orange is drawn given that the fruit is drawn from Bag 2. This can be calculated as:
P(O|B2) = Number of oranges in Bag 2 / Total number of fruits in Bag 2
= 5 / (4 + 5)
= 5/9
P(B2) is the probability that the fruit is drawn from Bag 2, without any information about the color of the fruit. As all three bags are equally likely to be chosen, we have:
P(B2) = 1/3
P(O) is the probability that an orange is drawn, without any information about the bag it was drawn from. This can be calculated as the weighted average of the probability of drawing an orange from each bag, using the probabilities of choosing each bag. We have:
P(O) = P(O|B1) * P(B1) + P(O|B2) * P(B2) + P(O|B3) * P(B3)
= (3/8) * (1/3) + (5/9) * (1/3) + (3/5) * (1/3)
= 31/135
Substituting the calculated values into Bayes' theorem, we get:
P(B2|O) = P(O|B2) * P(B2) / P(O)
= (5/9) * (1/3) / (31/135)
= 25/93
≈ 0.269
Therefore, the probability that the chosen fruit was an orange and was drawn from Bag 2 is approximately 0.269 or 26.9%.
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solve for x in the following:
2x^3+3x^2+12x+1 =0
The value of x in the equation 2x³ + 3x² + 12x + 1 = 0 when solved is x = -0.085
Given the following equation
2x³ + 3x² + 12x + 1 = 0
The equation cannot be factorized
So, we solved graphically
See attachment for the graph of the equation 2x³ + 3x² + 12x + 1 = 0
On the graph, we observe that the curve of the equation crosses the x-axis at
x = -0.085
This means that the solution for x in the equation is x = -0.085
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In his free time, Gary spends 9 hours per week on the Internet and 9 hours per week playing video games. If Gary has five hours of free time per day, approximately what percent of his free time is spent on the Internet and playing video games?
Question is on photo.
Therefore , the solution of the given problem of triangle comes out to be x = Tan⁻¹(15/8) .
A triangle is what exactly?Because a triangle has two or so more extra parts, it is a polygon. It has a straightforward rectangular shape. Only two of a triangle's three sides—A and B—can differentiate it from a regular triangle. Euclidean geometry produces a single area rather than a cube when boundaries are still not perfectly collinear. Triangles are defined by their three sides and three angles. Angles are formed when a quadrilateral's three sides meet. There are 180 degrees of sides on a triangle.
Here,
Given :
=> AS =15 and AN = 8
So,
We have to find m∠N = x
=> Tanx = 15/8
=> x = Tan⁻¹(15/8)
Therefore , the solution of the given problem of triangle comes out to be x = Tan⁻¹(15/8) .
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6. All of the students in a classroom list their birthdays.
a. Is the birthdate, b, a function of the student, s? Explain your reasoning.
b. Is the student, s, a function of the birthdate, b? Explain your reasoning.
Answer:
is the birthdate
Step-by-step explanation:
because very student in the classroom need to give their day to be recorded
Kathy purchases an eyebrow pencil and a concealer. The eyebrow pencil is priced at $6.94. If she is billed $14.13 for both the items,what is the price of the concealer?
Answer:
7.19
Step-by-step explanation:
Take the total cost and subtract the eyebrow pencil to find the cost of the concealer.
14.13
- 6.94
---------------
7.19
3.4 You have one piece on the bar. Your opponent controls the inner 2, 4 , and 6 points and has a blot on the 5 point. It is your turn. What is the probability of being able to hit the blot on your next roll? What is the probability of your having to enter from the bar without hitting the blot?
The probability of being able to hit the blot on the next roll is 11/36, and the probability of entering from the bar without hitting the blot is 2/36 or 1/18.
The probability of being able to hit the blot on the next roll is 11/36. The probability of entering from the bar without hitting the blot is 2/36 or 1/18. The given situation can be represented by the following diagram:In the given scenario, the player has one piece on the bar, and the opponent controls the inner 2, 4, and 6 points while also having a blot on the 5 point. This means that the player needs to roll a 5 in order to hit the opponent's blot. The probability of rolling a 5 is 4/36 or 1/9.The player can also enter from the bar without hitting the blot. To do this, the player must roll a 1 or a 2. The probability of rolling a 1 or a 2 is 2/36 or 1/18.Therefore, the probability of being able to hit the blot on the next roll is 11/36, and the probability of entering from the bar without hitting the blot is 2/36 or 1/18.
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5/14 x4 in simplest form as a fraction
Answer:
the answer is 5 simplify
Answer:
20/14
10/7
0r 5/56
Step-by-step explanation:
i hope you find it helpful
The probability that Carmella will pay for the tickets is greatest, approximately __%, if Ben selects his tile using method __
The probability that Carmella will pay for the tickets is greatest, approximately 50%, if Ben selects his tile randomly.
Now, let's calculate the probability of Carmella paying for the tickets based on the different methods that Ben can use to select his tile.
If Ben selects his tile randomly, then the probability of him selecting an even-numbered tile is 3/6, or 1/2. This is because there are three even-numbered tiles (2, 4, and 6) and six total tiles. Similarly, the probability of Ben selecting an odd-numbered tile is also 1/2, as there are three odd-numbered tiles (1, 3, and 5).
So, the probability of Carmella paying for the tickets if Ben selects his tile randomly is 1/2, or approximately 50%.
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For the following exercises, find the angle
in the given right triangle. Round answers to the nearest hundredth.
Provide the given right triangle
I'm sorry, but I cannot see the following exercises that you are pertaining to. Please provide the given right triangle and the specific angle you want to find so I can assist you accordingly.
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Sum to infinity:-
[tex]1 + \frac{3}{4} + \frac{7}{16} + \frac{15}{64} + ...[/tex]
When summed to infinity, the series would be 2/3.
How to sum to infinity ?Let's analyze the pattern of the numerators first:
1, 3, 7, 15, ...
We can see that the numerators are increasing in powers of 2, minus 1:
1 = 2¹ - 1
3 = 2² - 1
7 = 2³ - 1
15 = 2⁴ - 1
The denominators are increasing powers of 4:
4 = 2²
16 = 2⁴
64 = 2⁶
Now, we can rewrite the series as:
1 + (2^1 - 1) / 2^2 + (2^2 - 1) / 2^4 + (2^3 - 1) / 2^6 + ...
To find the sum to infinity, we can rewrite the series as a single summation:
∑[(2^n - 1) / 2^(2n)] for n = 0 to infinity
To evaluate this sum, we can split it into two separate summations:
∑[2^n / 2^(2n)] - ∑[1 / 2^(2n)] for n = 0 to infinity
Now, subtract the second summation from the first:
S = S1 - S2 = 2 - 4/3 = (6 - 4) / 3 = 2/3
So, the sum to infinity for this series is 2/3.
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One year ago, Derek joined a health club. He paid a yearly membership fee of $259. 99 that covers all the club’s services except use of the racquetball courts. Derek paid $3. 75 each time he used a racquetball court. For the entire year at a health club, Derek paid a total of $436. 24.
Part A: Write an equation to represent the problem. Use r to represent the number of times Derek used one of the racquetball courts. Explain your reasoning.
Part B: solve the equation you wrote in Part A to find how many times Derek used a racquetball court. Show your work.
Please try to explain fully of what you did and how you solved it.
Tysmm‼️
Part A: The equation to represent the problem is 259.99 + 3.75r = 436.24. The variable 'r' represents the number of times Derek used one of the racquetball courts.
Part B
Derek used a racquetball court 46.93 times
Part A: The equation to represent the problem is: 259.99 + 3.75r = 436.24. The “r” represents the number of times Derek used one of the racquetball courts. 259.99 is the yearly membership fee and the 3.75 is the cost of each time Derek used a racquetball court. 436.24 is the total amount Derek paid for the entire year at the health club.
Part B: To solve the equation, we need to isolate “r” on one side of the equation. To do this, we need to subtract 259.99 from both sides of the equation. We then get 3.75r = 176.25. We divide both sides by 3.75 to get r = 46.93. This means that Derek used a racquetball court 46.93 times.
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a) Write an expression for the surface area of a
cube with edge length x. Fully simplify your
answer.
b) A cube has a surface area of 1176 cm². What is
its edge length?
Give your answer in centimetres (cm) and give
any decimal answers to 1 d.p.
a) The surface area of a cube with edge length x is
6x^2b) The edge length of the cube is solved to be 14 cm.
How to find the edge length of the cubea) The surface area of a cube with edge length x is given by the formula:
SA = 6x^2
b) We are given that the surface area of the cube is 1176 cm^2. Setting this equal to the formula for surface area of a cube, we get:
6x^2 = 1176
Dividing both sides by 6, we get:
x^2 = 196
Taking the square root of both sides, we get:
x = ± 14
Since the edge length must be a positive number, we discard the negative solution and conclude that the edge length of the cube is 14 cm (to 1 decimal place).
Therefore, the edge length of the cube is 14 cm.
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Solve for x.
X
16
25
20
Answer:41
Step-by-step explanation:
add 25 and 16 together
A random sample of 50 BCTC students is asked, "Would you rather speak all languages or speak to animals?" After pondering the question carefully, 30 of the students say they would rather speak to animals. What is the low end of a 95% confidence interval for the proportion of all BCTC students who say they would rather speak to animals? Enter your answer as a decimal rounded to 4 decimal places.
The low end of a 95% confidence interval for the proportion of all BCTC students who say they would rather speak to animals is 0.3964.
The low end of a 95% confidence interval for the proportion of all BCTC students who say they would rather speak to animals is 0.3964.What is confidence interval?A confidence interval is a range of values, calculated from a data sample, that is used to estimate an unknown population parameter.The formula for the margin of error:margin of error = z* (standard deviation / sqrt(n))Wherez* = critical valueStandard deviation (σ) = Sample standard deviationn = Sample sizeHow to calculate the low end of a 95% confidence interval for the proportion of all BCTC students who say they would rather speak to animals?The formula for calculating the confidence interval for a proportion is:p ± z* (sqrt((p(1-p))/n))Here,Sample proportion (p) = 30/50 = 0.6Sample size (n) = 50Critical value for a 95% confidence interval (z*) = 1.96Put these values in the above formula to calculate the low end of the confidence interval:0.6 ± 1.96 * sqrt((0.6(1-0.6))/50)0.6 - 1.96 * 0.1143 = 0.3964 (rounded to 4 decimal places)Therefore, the low end of a 95% confidence interval for the proportion of all BCTC students who say they would rather speak to animals is 0.3964.
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