Question

Write the sum using summation notation, assuming the suggested pattern continues.

-9 - 4 + 1 + 6 + ... + 66

Answer 1

@whpalmer4

Answer 2

@Reaper534

Answer 3

ohh thats easy it adds by 5

Answer 4

so 11 16 21 26 31 ect.

Answer 5

so is it -9+5n

Answer 6

\[\sum_{n=0}^{15} (-9+5n)\]

Answer 7

@Reaper534

Answer 8

tht will be the best choice

Answer 9

thank you can you also help me in this problem

Answer 10

Find the sum of the first 9 terms of the sequence. Show all work for full credit.

2, -7, -16, -25, ...

Answer 11

2-9=-7-8=-16-... so u subtract by 9 im alo in school right now too i need to get back at that lol

Answer 12

lol thank you so i just subtract -16-9

Answer 13

yeah u do u start from 2 or 25?

Answer 14

alright so 2-9, -7-9, -16-9, 25-9 and i will have my answer

Answer 15

2-9=7,...

Answer 16

ok gtg to my paper

Answer 17

-7-9= -16, -16-9=-25-9=-34... and so on

Answer 18

correct

Answer 19

an i do this unitl i get to the ninth term

Answer 20

ok there u go now i relly gtg

Answer 21

ight thanks