MATHEMATICS HIGH SCHOOL

A trampoline has an area of 49 pi square feet. what is the diameter of the trampoline?

Answers

Answer 1
Answer: The area of a circle is pi times the radius squared. Set up the equation pi x r squared = 49 pi square feet. Divide both sides of the equation by pi. 
r squared = 49 square feet. Take the square root of both sides. r = 7 feet.
The diameter of the trampoline is double the radius which is 14 feet.

Related Questions

3(x + 4) = 18 (Given)3x + 12 = 18 (Distributive Property)3x = 6 (Subtraction)x = 2Give a reason for the last step in the argument shown.A)addition B)division C)subtraction D)multiplication
Help help plz lol thanks
Solve the following inequality.-3.55g<-28.4which graph shows the correct solution?
Justin weighs 72 kilograms. What is his weight in pounds?
125apples were shared between jerry and kay. kay received 20% less than jerry.

Alma wants to prove to her parents that listening to music while she studies for her tests will help her get better grades. She decides to ask 15 of her friends if they listen to music while they study for tests and what their grades are. She finds that her friends who have high grades also listen to music while they study for tests. She tells her parents that she has proven that listening to music while studying for tests will cause her grades to improve. What mistake has Alma made?

Answers

She asked her friends, which does not represent a random sample.

She tried to show cause and effect without doing an experiment (which includes simple random sample, control group, treatment, etc).

So the answer is she did not use a random sample, and tried to show cause and effect with an observational study.

Answer:

She did not use a random sample, and she tried to show cause and effect with an observational study.

Hope this Helps! Mark Brainliest Please!

Help with number 7??

Answers

If you save 15% to 60% off, you pay 85% to 40% of what you would originally pay. In this case, it's $120. If 1% is $1.20, then your range of savings would be from $13.75 to $45.

7. A club's membership increases from 540 members to 995 members. What is the percent increase?

Answers

Answer:

84.2594%

Step-by-step explanation:

Based on the given conditions, formulate: (995-540) ÷540

455

Calculate the sum or difference:

P40

Cross out the common factor. ins

Rewrite a fraction as a decimal: 0.842592

100

Multiply a number to both the numerator and the denominator: 0.842592 × 100

0.842592 × 100

Write as a single fraction:

1084.2592

Calculate the product or quotient:

100

Rewrite a fraction with denominator equals 100 to a percentage: 84.2592%

Answer:

11.13%

Step-by-step explanation:

Please mark brainliest. thank you.

758x92 in standard algorithm

Answers

Answer:69736

Step-by-step explanation: Use long multiplication to evaluate

6. If RT = 4x, find the value of x and RS. x= RS = S RT = *​

Answers

Answer: 4

4x = 4

S RT = 4

Answer = 4

i am not so sure.

If a certain medicine cures 90% of the people who take it, what is the probability that if 9 people take the medicine that 6 will be cured?A) 0.01
B) 0.02
C) 0.04
D) 0.33

Answers

This is an example of binomial distribution probability. The probability that a person gets cured by the medicine (p) is 90% or 0.9. The probability that a person does not get cured by the medicine (q) is 100 - 90 = 10% = 0.1. The probability of a binomial distribution is given by nCx (p)^x (q)^(n - x); where n is the sample size, x is the number of success, p is the probability of success, and q is the probability of failure. Therefore, the probability that out of 9 people that takes the medicine, 6 will be cured is given by 9C6 (0.9)^6 (0.1)^3 = 84 x 0.531441 x 0.001 = 0.0446. Therefore, option C (0.04) is the correct answer.

option C (0.04) is the correct answer
Other Questions
A total of 180 students went on a field trip. There were 3 buses. If each bus had the same number of students on it, how many students were on each bus? Explain how to solve using compatible numbers.
What is the solution of the equation?-10 + sqrt x+8 = -4
Is two ratios are formed at random from the four numbers 1,2,4, and 8 what is the probability that the rations are equal? Show works please?
Margaritas is a very popular restaurant. Occasionally, the restaurant provides lunch and/or dinner for a local charity house. Each lunch costs $6.50. Each dinner costs $10.25. The restaurant's expenses for providing the meals cannot exceed $1,183 per trimester. If x represents the number of lunches and y represents the number of dinners, what domain best fits the situation