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|x|+|y| or |x+y|
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15 Mar 2022, 02:00
15 Mar 2022, 02:00
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Question Stats:
83% (00:45) correct
16% (01:29) wrong based on 77 sessions
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\(xy<0\)
A. Quantity A is greater
B. Quantity 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| |
|x+y| |
A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Re: |x|+|y| or |x+y|
[#permalink]
15 Mar 2022, 02:35
15 Mar 2022, 02:35
1
1
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Important properties to remember:
If xy < 0 then |x|+|y| > |x+y|
&
If xy > 0 then |x|+|y| < |x+y|
Answer A
If xy < 0 then |x|+|y| > |x+y|
&
If xy > 0 then |x|+|y| < |x+y|
Answer A
Re: |x|+|y| or |x+y|
[#permalink]
01 Apr 2022, 11:12
01 Apr 2022, 11:12
3
rx10 wrote:
Important properties to remember:
If xy < 0 then |x|+|y| > |x+y|
&
If xy > 0 then |x|+|y| < |x+y|
Answer A
If xy < 0 then |x|+|y| > |x+y|
&
If xy > 0 then |x|+|y| < |x+y|
Answer A
For all real x and y, |x| + |y| => |x + y|, so the second statement should be |x|+|y| = |x+y|, no?
