Find the mistake solve for x
4(x+7)=-12
4x+28=-12
-28 -28
4x=-16
4 4
x=-4

The mistake was when they subtracted 28 from both sides.

-12 -28 = -40

So it should be 4x = -40

Then divide both sides by 4:

X = -10

Step-by-step explanation:

4(x+7)= -12

4x+28= -12

4x+28-28= -12-28

4x= -30

4x/4= -30/4

x= -30/4(-15/2)

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: