Suppose a population contains 40,000 people. All else being equal, a study based on a population sample that includes which of the following numbers of respondents would be the most reliable?

Astonia rides her bike 10 minutes to the park. She plays 25 minutes and then rides her bike home. How many total minutes does she ride her bike and play in the park?

How to write 60 as a product of prime factors

If my dad was 15 now he is 38 how many years was that

Jimmy invests $3000 in an account with a 3.8% interest rate, making no other deposits or withdrawals. What will Jimmy's account balance be after 9 years if the interest is compounded quarterly? Round to the nearest cent.

Atmospheric pressure, measured in pounds per square inch (psi) is the force exerted by Earth's atmosphere over a given area.

1,350,000 divided by 9,349

What is 28 - (-15)

Nine is 12% of which number

A number is five times a smaller number and their sum is 144. Find the larger number

What is the sum of the arithmetic series of odd numbers below?1 + 3 + 5 + ... + 25?