Answer: I am assuming it’s of a circle? So the answer would be rounded to 11.
Step-by-step explanation:
Answer: C, 420
Step-by-step explanation:
The first positive even numbers are from 2 to 40, so the sum is equal to the number of terms, times the number of terms plus one (20*21 = 420)
the sum is 420
If you distribute -5 to the things in the parenthesis you would get 10k-20 which is the same as -5(-2k+4)
The answer to this question is 3744.