Answer:
A. r!
Step-by-step explanation:
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:

Permutation of n things taken r at a time

Combination of n things taken r at a time:

Division:

So the correct answer is:
A. r!
The measure of ZPQR is C. 150°
Answer:
4
Step-by-step explanation:
2 plus 2 is 4
write a 2 column proof for what im going to need more info
Answer:
700
Step-by-step explanation:
Since 3 + 4 = 7, then 300 + 400 = 700