The distance around a circular sidewalk is 2,000 feet. Which of the following is the closest to the radius of the circle formed by the sidewalk, in feet? (Note: π ≈ 3.14) A. 20
B. 32
C. 63
D. 318
E. 636

When benny’s sister penny is 24, benny’s age will be 125% of her age. how old is lenny? a) how old will benny be then? b)if benny is 12 years old now, how old is penny now? explain your reasoning.

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

What numbers are included in the set of integers? what numbers are not included?