Answer:
A
Step-by-step explanation:
The volume of the triangular prism is

where
h = height
Base = triangle.
In your case,

then

We are only concerd with the x term
3x-(-6x)=
3x+6x=
9x
b=9
Answer:
112.5
Step-by-step explanation:
you would then cross multiply. 90 x 100 and 80 x ?
you will then have 9000 = 80?
divide 9000 by 80 and you will get ? = 112.5
♥
Answer:
y=60°
x=12°
Step-by-step explanation:
because the propertiy of parallelogram is the opposite side have equal measurement.
that is why y=60°
x+3=15 the paralla side are equal
x=15°-3°
x=12°
proof》》》》x+3=
12°+3°=15°
15°=15°