PLEASE HELP PLEASE HELP ME WILL GIVE BRAINLIEST Solve the following
: 5 2 = 5-2= (-5)2 = -52 = 50 =

What are “like terms”? why can we only add like terms?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Two airplanes start at the same place and travel in opposite directions, one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?