On the coldest night in north ice, greenland, the temperature dropped from 0°c to −21°c in 7 hours. what is the average temperature change per hour?

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?