Denny rode his bicycle miles in the morning. then he rode miles in the afternoon. how far did he ride his bicycle altogether?

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.

Last week jason walked 3 1/4 miles each day for 3 days and 4 5/8 miles each day for 4 days. about how many miles did jason walk last week?

For what values of a is the sum of the fractions 2a−1 / 4 and a−1 /3 positive?