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

Question

anonymous · Answer

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??

anonymous · Answer

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

anonymous · Answer

2,768

 2,800

 2,832

 2,864

anonymous · Answer

those are the options

anonymous · Answer

What you are getting the last term??

anonymous · Answer

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

anonymous · Answer

i got 2768

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

thanks