Question

plzzz tell I am givin so many points​

Answer 1

L=5x-4

B=x

permtr of rectangle=2(l+b)

2(5x-4+x)=40

2(6x-4)=40

12x-8=40

12x=40+8

12x=48

x=48/12

x=4

B=x=4

B=4

L=5x-4

L=5(4)-4

L=20-4

L=16