A) 12 - (-4) =12+-4
=-16

A) 4 + (-9)
=4-(-9)
=-5

A) -7 + (-6)
=-7-(-6)
= -1

A) -9 - (-4)
=-9+(-4)
=-13

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?