Question

PLEASE HELP !!!!!!!!!
1) Quadrilateral ABCD is a square. If AB=5+3x and BC= 20-2x , what is the length of / CD
A) 3

B) 50

C) 15

D) 14

2) Cindy has 500 feet of fencing around a rectangular pen that has a width of a feet and length of b feet. This is represented by the equation 2 (a+b) =500 Cindy plans to change the width of the pen and wants to solve for b to see how the new length will be affected. Which equation shows a correct solution for b in terms of a?

A) b=a- 500/2

B) b= 500/2 -a

C) b= 500-a/2

D) b=a-500/2

please number answers so i know which answer is for each question.

Thanks for your help :)

Answer 1

1: (D), AB=BC=CD=DA, so 5+3x=20-2x -->x=3
AB=14, so CD=14