Question

Help please please help me ❤❤❤ I give brailiast❤)

Answer 1

7. x = 8

8. x = 9

9. x = 5

Answer 2

So remember that the perimeter is the sum of all the sides. Using this info, we can solve each of the problems as such:

7.

`x+x+x+x=32\\4x=32\\\boxed{x=8}`

8.

`k+k+7+k+11=45\\3k+18=45\\3k=27\\\boxed{k=9}`

9.

`y+5y+6y-3=57\\12y-3=57\\12y=60\\\boxed{y=5}`