Asquare has sides of 10x. write and simplify an expression for the perimeter of that square.

The perimeter of the square would be 40x

Step-by-step explanation:

In order to find that, we can use the equation for the length of a perimeter in a square.

P = 4s

Now we can input the value of the sides for s

P = 4(10x)

P = 40x

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.