Question

Find the 10th partial sum of the summation of 5i plus 2, from i equals 3 to infinity.

Answer 1

3 to 9 is 10 terms ...

Answer 2

lol ... lets try that again

Answer 3

\[\sum_{i=3}^{\infty} 5i+2\]

Answer 4

3,4, 5, 6, 7
8,9,10,11,12

10 terms is 3 to 12

Answer 5

okay so i just add them?

Answer 6

of course

Answer 7

kk thanks =)

Answer 8

yw

Answer 9

it didn't work options are
a)222
b)240
c)255
d)-355

Answer 10

5(3) + 2
+5(4) + 2
+5(5) + 2
+5(6) + 2
....
+5(12) + 2
-----------
5(3+4+5+...+12)
+10(2)

Answer 11

so..

5(10*15)/2 + 20

Answer 12

kk thanks

Answer 13

395 aint an option ... but ive seen plenty of question about lately that are simply mistakes

Answer 14

so which one do u think i should use?

Answer 15

http://www.wolframalpha.com/input/?i=sum+%28i%3D3..12%29%2C++5i%2B2

lets chk my thought process tho

3, 4, 5, 6, 7
8, 9, 10, 11, 12

thats 10 terms alright ....

Answer 16

i wouldnt use any of them and complain to whoever is making you pick a lie as a solution.

Answer 17

okay thanks

Answer 18

if you can take a screenshot (or a photo of it) and post it to see if there is something being missed

Answer 19

thats okay. ive checked it several times so it's alright. its not the first mistake ive found in this program

Answer 20

k, good luck :)