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If m^(-1) = -1/3 then m^(-2) is equal to
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02 Jun 2020, 02:00
02 Jun 2020, 02:00
Expert Reply
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Question Stats:
79% (00:29) correct
20% (00:29) wrong based on 48 sessions
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If \(m^{(-1)} = -\frac{1}{3}\) then \(m^{(-2)}\) is equal to
(A) -9
(B) -3
(C) -1/9
(D) 1/9
(E) 9
(A) -9
(B) -3
(C) -1/9
(D) 1/9
(E) 9
Re: If m^(-1) = -1/3 then m^(-2) is equal to
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02 Jun 2020, 02:00
02 Jun 2020, 02:00
Expert Reply
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Re: If m^(-1) = -1/3 then m^(-2) is equal to
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02 Jun 2020, 04:55
02 Jun 2020, 04:55
1
Carcass wrote:
If \(m^{(-1)} = -\frac{1}{3}\) then \(m^{(-2)}\) is equal to
(A) -9
(B) -3
(C) -1/9
(D) 1/9
(E) 9
(A) -9
(B) -3
(C) -1/9
(D) 1/9
(E) 9
Here's one approach:
CONCEPT: b^(-n) = 1/(b^n)
Given: mˉ¹ = -1/3
Rewrite as: 1/m = 1/(-3)
We can see that m = -3
So, mˉ² = 1/(m²) = 1/(-3)² = 1/9
Answer: D
Cheers,
Brent
