Question

Multistep An artist wants to frame a square painting with an area of 400 square inches. She wants to know the length of the wood trim that is needed to go around the painting. a. If x is the length of one side of the painting, what equation can you set up to find the length of a side? b. Solve the equation you wrote in part a. How many solutions does the equation have?​

Answer 1

Answer:

a. x = √400

b. x = +-20  (because 20^2 = 400)  It has two, positive and negative 20.

c. No, the -20 doesn't make sense because something can't have negative length.

d. 80 inches (20 * 4 = 80)