Answer:
0
Step-by-step explanation:
It may say combine, but it`s subtraction soooo it`s 0.
Answer: 14
Step-by-step explanation:
Given
Excavation cone measures
height 
Diameter 
Truck can dump
at a time
The volume of a cone is

Putting values

No of trips(N) required to accumulate this much volume is given by

Therefore, 14 trips are necessary to accumulate a cone of volume 
Answer:
7
This question is tying to introduce an idea that
eventually becomes a calculus question ....
<u>(4^2 + 3(4)) - (0^2+3(0))</u>
4 - 0
<u>28 - 0 </u> = 7
4
Step-by-step explanation:
Answer:
19+12 = 31 pieces
Step-by-step explanation:
Answer:
The equivalent expressions are;
9x + 9
and
9(x + 1)
Step-by-step explanation:
Mathematically, we should understand that an equilateral triangle has all of its sides equal
So if one side is 3x+ 3, the other sides too measures same
Therefore, the length of the rope represents the perimeter of the triangle
This is obtainable by adding all the side lengths together
This will be;
3x + 3 + 3x + 3 + 3x + 3 = 9x + 9
This is also same as 9(x + 1)