Answer:
x = -1
Step-by-step explanation:
-4(3x-7) =40
Divide each side by -4
-4(3x-7)/-4 =40/-4
3x-7 = -10
Add 7 to each side
3x-7+7 = -10+7
3x = -3
Divide each side by 3
3x/3 = -3/3
x = -1
Answer:
(75 × 12) + (3 × 580) = 2640
Step-by-step explanation:
it harden in pops because the helium in side
The area of a square given its diagonal (d) is computed as follows:

In this case, the diagonal is 10 units long, then the area is:
L = length w = width
Write System of Equations:
l = 2w
l + w = 66
Substitute 2w for l:
2w + w = 66
3w = 66
w = 22
Solve for l:
l = 2w
l = 2(22)
l = ww