He would need 10.6 shelves. (Also what kind of shelf can only hold 9 books?)
Answer:
10
Step-by-step explanation:
That's is ur answer lol brainlist me
Answer: A=1944m²
Step-by-step explanation:
A=6a2=6·182=1944m² ← Work
* Hopefully this helps:) Mark me the brainliest:)!!
ANSWER
B.) 72
EXPLANATION
Recall the expansion for the factorial notation:

We want to simplify

Let us expand the numerator up to 7! while maintaining the denominator.

When we cancel out the common factors,we obtain:

This simplifies to

The correct answer is B.