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x and y are positive and
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23 Dec 2020, 05:37
23 Dec 2020, 05:37
Expert Reply
00:00
Question Stats:
75% (00:15) correct
25% (01:03) wrong based on 16 sessions
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x and y are positive and \(x^2+y^2=1\)
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.
Kudos for the right answer and explanation
Quantity A |
Quantity B |
\((x+y)^2\) |
\(1\) |
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.
Kudos for the right answer and explanation
Re: x and y are positive and
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23 Dec 2020, 21:00
23 Dec 2020, 21:00
1
Carcass wrote:
x and y are positive and \(x^2+y^2=1\)
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.
Kudos for the right answer and explanation
Quantity A |
Quantity B |
\((x+y)^2\) |
\(1\) |
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.
Kudos for the right answer and explanation
Option A: (x+y)^2 = x^2 + y^2 + 2xy. Given x^2 + y^2 = 1.
So option A is 1 + 2xy. This will be greater than option B.
Therefore option A is the correct answer.
Re: x and y are positive and
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30 Dec 2020, 08:31
30 Dec 2020, 08:31
Quantity A :
Expanding x^2+y^2+2*x*y =>1+2*x*y (since x & y are positive, this will become more than 1)
Qa>Qb
Hence A
Expanding x^2+y^2+2*x*y =>1+2*x*y (since x & y are positive, this will become more than 1)
Qa>Qb
Hence A
