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Mathematics 11 Online
OpenStudy (lovelyharmonics):

@jdoe0001

OpenStudy (lovelyharmonics):

how do i do this one when a is ^15? Find an equation for the nth term of the arithmetic sequence. a14 = -33, a15 = 9

OpenStudy (jdoe0001):

well between -33 and 9 there's -> -33+9 = -24 , so d = 24 and \(\bf a_1 = -33\)

OpenStudy (lovelyharmonics):

like the first a^14=-579

OpenStudy (jdoe0001):

welll shoot... is not -24 dohh

OpenStudy (jdoe0001):

-33 + n = 9 => n = 9+33 => 42 so d = 42

OpenStudy (lovelyharmonics):

indeed so its -579 +42( ?)

OpenStudy (lovelyharmonics):

how do i figure out whether it will be n-1 or n+1

OpenStudy (jdoe0001):

well, you're asked on the equation... so it'd be in terms of "n"

OpenStudy (jdoe0001):

-579 +42( n-1)

OpenStudy (lovelyharmonics):

but why?

OpenStudy (jdoe0001):

Find an equation \(\bf \text{for the nth term}\) of the arithmetic sequence.

OpenStudy (lovelyharmonics):

,-, okay thank you c:

OpenStudy (jdoe0001):

yw

OpenStudy (lovelyharmonics):

i have like 2 other questions if you would please help me c:

OpenStudy (jdoe0001):

tis easier posting anew, if I dunno, someone else may and we can also revise each other

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