Acomputer randomly picks a number from the group 75, 76, 77, 78, 79. what is the probability the number selected is greater than 78 or even? enter your answer, as a decimal, in the box.

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Ineed with number 6 , explain how to get 1978

What is the solution to the equation below? 3/x-2+6=square root x-2 +8