# Math

(-10)^-1

A. -1/10
B. -1/1^10***
C. 1/10
D. 10

I had a little trouble when I started these. Can someone explain this to me?

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2. 👎 0
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1. a^-n = 1/a^n

so (-10)^-1 = 1/(-10^1 = -1/10

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posted by Reiny
2. Thanks.

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posted by Seo-yeon

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