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Mathematics 23 Online
OpenStudy (anonymous):

(-9)10 x (9)^-3

OpenStudy (anonymous):

What do you want to know?

OpenStudy (anonymous):

(-9)^10 x (9)^-3

OpenStudy (anonymous):

sorry about that

OpenStudy (anonymous):

Do you want the solution?

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

Do you have an answer?

OpenStudy (anonymous):

A. (-9)^13 B. 9^7 C. 9^-30 D.(-9)^7

OpenStudy (anonymous):

those are the answers which one of those are correct?

OpenStudy (anonymous):

ooh sorry was still looking at your first question, give me a sec...

OpenStudy (anonymous):

The answer is B because: \[(-9)^{10} * 9^{-3} = 9^{10+(-3)} = 9^{7}\]

OpenStudy (anonymous):

But you would have to rewrite your question with (-9)^10 which is not the same as -9^10.

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