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Mathematics 7 Online
OpenStudy (anonymous):

Sequences

OpenStudy (anonymous):

OpenStudy (anonymous):

ok, for the first one, you would just find the decrease rate then table it out. (like (1, 15) then (2, 11) so on and so forth

OpenStudy (anonymous):

the second one you can see that between three points (20, -, 32) that there is an increase of 12. assuming that the rate of increase is constant, you can divide the difference between the available points to get the correct answer. Sound right?

OpenStudy (mathmale):

Actually, this is an arithmetic sequence, so there's no "decrease rate;" instead, each new sequence value is obtained by subtracting some quantity from the previous value. @goku-kai: what is this quantity?

OpenStudy (anonymous):

Woah let me get this together in my head.... So the first one is separted by 4 is that the quantity @mathmale and @BrandonH4499 I will divide 20 by 12 and 32 by 12?

OpenStudy (anonymous):

on the first one, that is right. but the second one, your kind of off. you would find the difference between the two available points then divide that by two (12 divided by two) then just add what you get from that to get your answer

OpenStudy (anonymous):

add it to the first point sorry

OpenStudy (anonymous):

ok so I got the first one...

OpenStudy (anonymous):

now the second one your saying find the difference between the two (Which is 12)

OpenStudy (anonymous):

and then 12/2 (Which is 6)

OpenStudy (anonymous):

go on

OpenStudy (anonymous):

thats right

OpenStudy (anonymous):

Haha 26! Thanks!

OpenStudy (anonymous):

and then 26 + 6 = 32

OpenStudy (anonymous):

no problem. tag me in anything else you need and i will try to help as best i can

OpenStudy (anonymous):

Cool thanks, I might be taggin u n some questions in a few!

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