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x = 2y; y is a positive integer.
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03 Oct 2018, 22:32
03 Oct 2018, 22:32
Expert Reply
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Question Stats:
74% (00:32) correct
25% (00:49) wrong based on 105 sessions
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\(x = 2y\)
y is a positive integer.
Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.
y is a positive integer.
Quantity A |
Quantity B |
\(4^y\) |
\(\frac{1}{2^{-x}}\) |
Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.
Re: x = 2y; y is a positive integer.
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04 Oct 2018, 04:15
04 Oct 2018, 04:15
1
Carcass wrote:
\(x = 2y\)
y is a positive integer.
Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.
y is a positive integer.
Quantity A |
Quantity B |
\(4^y\) |
\(\frac{1}{2^{-x}}\) |
Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.
Here
Qty A can be written as \(4^y\) = \(2^{2y}\)
and QTY B can be written as = \(\frac{1}{2^{-x}}\) = \(2^x\)
Since \(x = 2y\), we can see both the quantities QTY A and QTY B are equal.
Hence option C
Re: x = 2y; y is a positive integer.
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16 Apr 2022, 05:05
16 Apr 2022, 05:05
Just remember that
2-¹ = 1/2
1/2-¹ = 2
2-¹ = 1/2
1/2-¹ = 2
