Answer:
v=-3/5
Step-by-step explanation:
9 = v + 4 v + 12
=>5v=9-12
=>v=-3/5
v = -3/5 or -0.6
v+4v+12 = 9
5v + 12 = 9
subtract 12 from both side, we got:
5v + 12 - 12 = 9 -12
5v = -3
Divide both side by 5, we got:
5v / 5 = -3 / 5
Hope this help you :3
16
separate into 4 triangles. 2x1= 2
triangle area formula= 1/2 l x w
3x4=12 12+4 is 16
