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If 2^2p-10=2(2^9-2p), then p=
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21 Nov 2018, 08:24
21 Nov 2018, 08:24
Expert Reply
00:00
Question Stats:
94% (00:51) correct
5% (03:34) wrong based on 19 sessions
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Joined: 07 Aug 2016
Posts: 59
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GRE 1: Q166 V156
Re: If 2^2p-10=2(2^9-2p), then p=
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23 Nov 2018, 12:33
23 Nov 2018, 12:33
1
Carcass wrote:
If \(2^{2p-10}=2(2^{9-2p})\), then p=
A. 5
B. 3
C. 0
D. -1
E. -2
A. 5
B. 3
C. 0
D. -1
E. -2
Easiest way is to back-substitute.
p = 5
2^(10-10) = 2 (2^(9 - 10))
2^0 = 2* 2^-1
2^0 = 2/2
1 = 1
Answer choice A
Re: If 2^2p-10=2(2^9-2p), then p=
[#permalink]
27 Nov 2018, 06:53
27 Nov 2018, 06:53
it was the same question as in the exam
