Question

Math help asap 12,14,16,18,22 show work help asap assig 4

Answer 1

Answer: see below

Explanation:

12) 2(x + 4) = 8

÷2 ÷2

x + 4 = 4

-4 -4

`\large\boxed{x=0}`

14) 4w - 2(1 - w) = -38

4w -2 + 2w = -38

(4w + 2w) - 2 = -38

6w - 2 = -38

+2 +2

6w = -36

÷6 ÷6

`\large\boxed{w=6}`

16) 10(1 - 2y) = -5(2y - 1)

10 - 20y = -10y + 5

+20y +20y

10 = 10y + 5

-5 -5

5 = 10y

÷10 ÷10

`\large\boxed{(1)/(2)=y}`

`18)\quad s=(1)/(2)gt^2\\\\\\.\qquad (2)s=(2)(1)/(2)gt^2\quad \rightarrow \quad 2s=gt^2\\\\\\.\qquad (2s)/(t^2)=(gt^2)/(t^2)\qquad \rightarrow \qquad\large\boxed{(2s)/(t^2)=g}`

`22)\quad V=\pi r^2h\\\\\\.\qquad (V)/(\pi r^2)=(\pi r^2h)/(\pi r^2)\qquad \rightarrow \qquad \large\boxed{(V)/(\pi r^2)=h}`