there are 20 students in the group, 15 from them are athletes. it is taken for competition 10 students. find the probability that 10 students are 5 athletes.

The number of cups of sugar (y) in a cookie recipe is proportional to the number of cups of flour (x). The recipe calls for 1.25 cups of sugar for each cup of flour. Which equation could represent the cups of sugar required for a batch of cookies?

What's the common ratio for 162,108,72,48

The amount of interest earned on a savings account varies directly with the amount of money saved. If $208 in interest is earned on $6,500 of savings, how much interest will be earned on $8,000 of savings over the same time period?

Is 100 t-shirts for $428.00 proportional to 3,000 t-shirts for $12,180.00?

A circle has a circumference of 16 pi yards find the area in terms of pi

A company claims that 5% of its products will be defective. A simple random sample of 300 products contain 10 defective products. What is the probability that 10 or more defective products would have happened by random chance

Students in a college statistics class want to conduct a survey to determine the percentage of students in the school who are willing to pay a fee for participating in extracurricular activities.

Row counted a total of 40 white cars and yellow cars there were nine times as many white cars as yellow cars how many white cars did Ralph account

How do I solve c=2πr

Prove that the value of expression 97+312 is divisible by 90.