Answer:
Step-by-step explanation:

That is a description of the formula for the rectangle rule using left endpoints.
Answer:
-9n^6
Step-by-step explanation:
(−9n^3)(n^3)
=(−9) * n^3 * n^3
=−9 * n^6
=−9n^6
When Serena is 10, her mom is 3*10=30. Her mom is 20 years older than Serena.
If her mom's age divided by half is equal to Serena's, then she will be twice as old as Serena.
20 + 20 = 40
20 * 2 = 40
Serena will be 20, her mom will be 40.
Answer:
NOPE, the surface area is bigger than the volume, the answer must be C
Step-by-step explanation:
18+18+36+36+72+72 = 252