Ineed on adding the same numbers but one negative and one positive? !

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

Atransformation was performed on rectangle c as shown in the graph. what type of transformation was performed? does that transformation result in congruent shapes? you people

As a self-employed seamstress, you know that it takes 7 yards of material to make 3 jackets. you bought 15 yards of material to make 7 jackets. did you buy enough material? if not, how much were you over or under?