Question

If ABCD is a parallelogram, what will be the value of BC?

Answer 1

Answer:

78

Step-by-step explanation:

Hello

A Parallelogram is a flat shape with opposite sides parallel and equal in length, in this case .

side AB = side DC

9x+3     =  11x-17

let x

$9x-11x=-17-3\\-2x=-20\\x=\frac{-20}{-2} \\x=10$

let's replace the value ​​of x in the equation of the side BC

$BC=6x+18\\BC=6*(10)+18\\BC=78$

Have a nice day

Answer 2

9x+3=6x+18
-6x .    -6x
3x+3=18
-3 .    -3
3x=16
/3 .  /3
x=5.33

6*5.33+18=50 , So BC equals 50 units.