Plz help!! :( simplify answers & round to nearest tenth as needed

Step-by-step explanation:

Using pythagorean theorem, x and x+6 are the legs, and x+7 is the hypotenuse.

You can express this as an equation.

Expanding, this is

Grouping up, this is

Rearranging, this is

Now, we can use the quadratic formula to solve.

= . Since we need x to be positive (due to it being a side length), our answer is , because it is the positive option

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

dude thats to long figure it

step-by-step explanation: