Answer:
I don't see an attatchment :( can u tell me the problem?
Step-by-step explanation:
12^2. + 15^2. = slide length ^2
144+225= slide length ^2
369= slide length ^2
Sqrt (369)= slide length
About 19.21 feet =side length
-2x + 12 = 2y
Add 2x on both sides,
12 = 2y + 2x
Divide by 2 on both sides,
6 = y + x -> x + y = 6
The answer is D.