Question

What is the sum of the arithmetic sequence 9, 14, 19, …, if there are 36 terms?

3,402

3,438

3,474

3,510


What is the sum of the arithmetic sequence 152, 138, 124, …, if there are 24 terms?

–240

–216

–192

–168



What is the sum of the arithmetic sequence 308, 304, 300, …, if there are 23 terms?

6,049

6,072

6,095

6,118



What is the 9th term of the geometric sequence 3, 9, 27, …?

2,187

6,561

Answer 1

google it

Answer 2

plz one question per post. scrolling up and down to see ur question will get annoyin

Answer 3

so do u know the common difference of 9,14,19,...

Answer 4

9,14,19,.......
a=5
c.d d=a2-a1=14-9=5
n=36
\[S=\frac{ n }{ 2 }\left\{ 2a+\left( n-1 \right)*d \right\}\]
calculate