if a sample of 21 runners were taken from a population of 580 runners, could refer to the mean of how many runners' times? A. 21 B. 580 C. Neither 21 nor 580 D. Both 21 and 580

1. The weights of 30 students in a class (in Kg) are as follows. 42, 52, 46,63, 47,40,50,63,52, 57,40,47,55,52, 49, 42,56,51,48,47, 44,54, 54,62, 60,58,56,60,58,53. Answer the following questions: What weight range do most students lie in?

Sheldon is making a steak for dinner. at first, the steak is at room temperature, 72°Friday. then, he places it on the grill, where it's temperature increase at a rate of 3 1/5°F for each minutes.

How to fund the of 904² using algebraic identity

Write 5 million in scientific

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What is the direct variation equation if y varies directly with x and y = - 9 when x = - 45?

Sabrina bought 8 gallons of paint. After she painted her shed, she had 4 gallons left over. How much paint did Sabrina use on her shed?

You invest $1,000.00 in one account and $4,000.00 in another account. Both accounts have the same interest rate over the same amount of time. How will the interest earned compare? A.) The $4,000.00 account will earn 2 times the amount of interest. B.

A step on a stairway is at least 8 inches high. What inequality should I write and solve to represent the minimum number of steps between floors that are 10 feet apart?

How to graph a proportional relationship and calculate the unit rate.