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x2 > 25 and x + y < 0
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02 Sep 2018, 07:27
02 Sep 2018, 07:27
Expert Reply
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Question Stats:
83% (00:55) correct
16% (01:14) wrong based on 65 sessions
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\(x^2 > 25\) and \(x + y < 0\)
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 |
x |
y |
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.
Re: x2 > 25 and x + y < 0
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21 Dec 2018, 04:21
21 Dec 2018, 04:21
2 cases, x is 6 or x is -6.
if x is 6, y should be negative for the sum to be negative, hence x would be greater.
if x is -6, y can be postive and can take value upto 5 for the second equation to be valid.
Hence D
if x is 6, y should be negative for the sum to be negative, hence x would be greater.
if x is -6, y can be postive and can take value upto 5 for the second equation to be valid.
Hence D
Re: x2 > 25 and x + y < 0
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21 Dec 2018, 09:55
21 Dec 2018, 09:55
the trap here is to keep in mind that square-root of a number can either be positive or negative. thus we should consider both the possibilities
