Answer:

Step-by-step explanation:
Complete question

Required
Solve for x
We have:

Collect like terms

Multiply through by 

Make x the subject

Answer:
a. 1/6
Step-by-step explanation:
for a, there is only one side that has three
X=angle
x+(10/9)x=(19/9)x=76
x=(76*9/19)=36
I believe that it may be 90 I could be wrong though
V = 180 cm3
l = 10 cm
w = 4 cm
h = ?
V=lwh, so to get h, divide equation by lw, to get h=V/(lw).
h = 180/(10*4) = 4.5 cm