Kaleb rode his bike at a rate of 10 mph for 2 hours and then 8 mph for 2 more hours. how far did he ride total? 16 miles 20 miles 30 miles 36 miles

How to determine whether two known pairs of points are on the same line.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

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.