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MaRussiya [10]
3 years ago
9

The 15th and 21st terms of an arithmetic sequence are -67 and -97, what is the 30th term?

Mathematics
1 answer:
natka813 [3]3 years ago
7 0

I believe it would be -132.

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Answer:

2y = 3x + 21

y = 1.5x + 10.5

plug in, in the second equation

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x = 12.5/-2.5 = -5

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x = -5

y = 3

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LUCKY_DIMON [66]
I don't know if it's right but this is what I did. the rounding might be a little different.


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