What is the sum of the arithmetic series below?
-105 +-100 + -95 + -90 +-85 + ... + -5 + 0 + 5+ ... + 85+ 90 +95 + 100 + 105
O A. O
O B. 1.050
O c. -1,050
OD: 2,152,5
O E. 2100

Option A, 0

Step-by-step explanation:

-105 +-100 + -95 + -90 +-85 + ... + -5 + 0 + 5+ ... + 85+ 90 +95 + 100 + 105

The answer is 0 because there is the same amount of negative numbers as there is positive.  Therefore, the answer is Option A, 0

12cm

the answer is d

6(h+1)/2=a

a=area

step-by-step explanation:

its the same thing as a square or rectangle but after multiplying two sides you need to divide it by two.