Answer:
S
ThenSn=n(a1+an)2Sn=n(a1 + an)2 , where nn is the number of terms, a1a1 is the first term and anan is the last term. The sum of the first nn terms of an arithmetic sequence is called an arithmetic series .
Step-by-step explanation:
It would be 2,400 i’m pretty certain
Answer:
a is vertical and b is adjacent angles
38. The nearest whole number to 38.49 is 38 because at .5 you begin rounding up to the nearest whole number.
Answer:
4.5
Step-by-step explanation: