Question

The sides of ABC are 30 units, 40 units, and 60 units in length. If the corresponding sides of XYZ are r times as long as the sides of ABC, which expression gives the perimeter of XYZ

Answer 1

to solve for each side, you must change the values of ABC to the proportions of XYZ:

X=30r Y=40r Z=60r

This can be done because it says that the sides are r times as big.

Add up the sides of X Y and Z to obtain the perimeter:

Perimeter=X+Y+Z which is equivalent to 30r+40r+60r. That is your final answer! Hoped I helped!