Answer:
x = 3
Step-by-step explanation:
Given
- 3x + 2 = - 7 ( subtract 2 from both sides )
- 3x = - 9 ( divide both sides by - 3 )
1
it's easy
a. 18
AB+BC = AC
x + x = 36
2x = 36
x = 36/2
x = 18
w = 16 cm, since 1.5:3 is a 1:2 ratio, 8 x 2 is 16