Answer:

Step-by-step explanation:
The formula ogf a volume of a pyramid:

B - area of a base
H - height
We have a base length a = 5 in and a height H = 9 in.
In the base we have a square. The formula of an area of a square is:

Substitute:

Calculate the volume:

Answer:
C
Step-by-step explanation:
4 x 4=16 and half of 4 is 2 so the answer is C)4
(x-9)(x+7)=0
x-9=0 or x+7=0
x=9 or x=-7
:)
First of all, we know a quality of all interior angles of a triangle, they should add to 180 degrees.
Does 50+50+80 degrees give 180 degrees?
100+80=180 degrees
Therefore, yes, it is possible to draw a triangle with the angle measures given to be 50, 50 and 80 degrees.
Hope I helped :)