Please help with this asap!

20

Step-by-step explanation:

We're king of shown that it's a parallelogram, so we should assume LM = KN (we can't solve it if we don't know if it's a parallelogram).

LM = KN

3x - 4 = x + 12

2x = 16

x = 8

LM = x + 12 = 8 + 12 = 20

KN = 3x - 4 = 3*8 - 4 = 24 - 4 = 20

checks out

Step-by-step explanation:

we know KN=LM, because it looks a parallelogram

3x-4=x+12

3x-x=12+4

2x=16

x=8

LM=8+12=20

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this