Question

What is the sum of the arithmetic sequence 9, 14, 19, …, if there are 32 terms?

Answer 1

Here,a =9

d = 14 - 9= 5

and n = 32..

For finding last term:
\[a _{n} = a + (n - 1)d\]

Put the above values and find a_n..

Now, for sum:

\[Sum = n(a + a_n)/2\]

and get the desired sum...

Able to do it or not??

Answer 2

ya thats what i di and i got 164, but thats not a choice

Answer 3

2,768

2,800

2,832

2,864

Answer 4

those are the options

Answer 5

What you are getting the last term??

Answer 6

ohh ya nevermind, i just did the first part, ill try again

Answer 7

i got 2768

Answer 8

You did the first part only..
Last term is 164..
Use the second formula I have written and find the sum..
Got or not???

Answer 9

You are absolutely correct dear...
Welcome dear..

Answer 10

thanks