URGENT PLEASE HELP WITH THIS QUESTION

Let's say the length of the rectangle is y. Then, we can write an equation for the perimeter of a small rectangle.

(x + y) * 2 = 21

Which can be rewritten as x + y = 10.5

Then, we go around the large rectangle and use x and y to write an expression. Starting with the top left length:

y + x + y + x + y + x + x

4x + 3y

We know that x + y = 10.5, meaning if we multiply, we get 3x + 3y = 31.5

Rewrite 4x + 3y as

3x + 3y + x

Substitute

31.5 + x

That means the perimeter of the large rectangle is 31.5 + x cm.

i believe the answer is letter c) 8

step-by-step explanation:

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363