Question

(5x + 5)2
(4x - 10)
(4x - 10)
(4x + 15)° (4x + 15)

Answer 1

Answer:

540

Step-by-step explanation:

I don't have a step by step explanation I was doing the math in my brain sorry if it is wrong

Answer 2

Answer:

21

Step-by-step explanation:

the angles of a pentagon add up to equal 540 degrees so what setup and equation

540 = 5x+5+4x-10+4x-10+4x+15+4x+15 and solve

step 1 combine like terms

540=25x+15

step 2 subtract 15 from each side

525=25x

step 3 divide each side by 25

x=21