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:
Answer:
Step-by-step explanation:
The grouping of the multiplicands has changed, but the end result will be the same.
Answer:
D. x^24
Step-by-step explanation:
If it is in the parenthesis you multiply.
-2*-12= 24
Two negatives equals a positive.
Answer:
5,10,20,30
Step-by-step explanation:
least to greatest
Answer:
80 copies
Step-by-step explanation:
4 minutes= 240 seconds. So I did 240 seconds divided by 3 seconds (one copy is made in that time) then you get 80. I don't know if that explanation make sense but the math checks out.
