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a and b are positive numbers such that
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14 Feb 2021, 22:27
14 Feb 2021, 22:27
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Question Stats:
73% (00:42) correct
26% (01:40) wrong based on 15 sessions
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a and b are positive numbers such that √(a+b)=5
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
a |
25-2b |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
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Re: a and b are positive numbers such that
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15 Feb 2021, 02:26
15 Feb 2021, 02:26
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SamaunParvez wrote:
a and b are possitive numbers such that √(a+b)=5
Column A
a
Column B
25-2b
Column A
a
Column B
25-2b
Kindly, abide by the rules of posting a question here!
The Answer would be A.
\(\sqrt{a + b} = 5\)
Squaring both sides;
\(a + b = 25\)
Col. A: \(a\)
Col. B: \(25 - 2b\)
Plug \(25 = a + b\) in Col. B
Col. A: \(a\)
Col. B: \(a + b - 2b = a - b\)
Subtract a from both columns;
Col. A: \(a - a = 0\)
Col. B: \(-b\)
Since, b is a positive number, Col. B will have a negative value.
Therefore, \(0 > -b\)
Re: a and b are positive numbers such that
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15 Feb 2021, 04:03
15 Feb 2021, 04:03
Expert Reply
Follow the rules for posting BEFORE to post a question on the forum
https://gre.myprepclub.com/forum/how-to-po ... 12752.html
Thank you
https://gre.myprepclub.com/forum/how-to-po ... 12752.html
Thank you
