Please Help!
The area of a rectangle is x^2 + 7x + 6. What is the perimeter of this rectangle?

  4x +14

Step-by-step explanation:

We presume the intention is that you factor the expression, then consider those factors to be the side lengths of the rectangle. The perimeter will be double the sum of those side lengths.

  x^2 +7x +6 = (x +1)(x +6)

for side lengths (x+1) and (x+6), the rectangle will have a perimeter of ...

  P = 2((x +1) +(x +6)) = 2(2x +7)

  P = 4x +14

i belive those are the ones that are under 90 degreese.

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.