I'm pretty sure its line c.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Find the sum of the first 42 terms of the following series, to the nearest integer.
2,7,12
Solution
The sum is given by
SUM_n=n/2*(a_1+a_n)
a_n=a_1+(n-1)d
a_1=2, n=42, d=5
The 42nd term is therefore given by
a_42=2+(42-1)5=207
SUM_42=42/2*(2+207)=21*209=4389
The sum of the first 42 terms of the series, therefore, is 4389
Answer:
-48
Step-by-step explanation:
16 x 2 = 32
32 - 80 = -48
Answer:
Hi there!
It looks like to me you are doing this right!
Way to go!
I checked everything you got everything correct.
