A rectangle has a side length of (8x+10) cm and a width of (5x-3)cm. The perimeter of the rectangle is 66cm .solve equation. what is x ?

x=2

Step-by-step explanation:

Please see attached picture for full solution.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

sas (side angle side)

aa(angle angle)

sss(side side side)

sas you have to find two sides with an angle in between

aa you find two angles because it will always add up to 180

sss find all sides

step-by-step explanation: