Answer:

Step-by-step explanation:
Given


Required
The volume of the sphere
This is calculated as:

So, we have:


This gives:


Answer:
2x²-7x
Step-by-step explanation:
7x²-5x²=2x²
10x-3x=7x
<span>It is also called order property of addition. This means that addends can be added in any order and the sum is always the same.</span>
Answer:
85
Step-by-step explanation:
add 4 values, excluding 72 (lowest grade)
total = 339
average = 330/4 = 84.75
84.75 rounding to nearest integer is 85