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505-555 (Easy)|   Algebra|      
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Bunuel
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 02 Apr 2015, 04:50
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A
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15% (low)

Question Stats:

84% (01:24) correct 16% (02:21) wrong based on 301 sessions

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If xy = 5 and x^2 + y^2 = 12, then x/y + y/x =

A. 2 2/5
B. 3 1/7
C. 5 1/3
D. 7
E. 60


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A
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 02 Apr 2015, 05:05
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Bunuel
If xy = 5 and x^2 + y^2 = 12, then x/y + y/x =

A. 2 2/5
B. 3 1/7
C. 5 1/3
D. 7
E. 60


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Simplifying x/y + y/x we get

\(\frac{(x^2+y^2)}{xy}\)

\(\frac{12}{5}\)

\(2\frac{2}{5}\)

Answer: A
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 02 Apr 2015, 05:39
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Bunuel
If xy = 5 and x^2 + y^2 = 12, then x/y + y/x =

A. 2 2/5
B. 3 1/7
C. 5 1/3
D. 7
E. 60


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We can make simplifying of question and get it in view: (x^2 + y^2) / xy and as we know the meaning of this parts:
x^2 + y^2 = 12
xy = 5
we can calculate the answer 12/5 -> 2 2/5 so answer is A

and we have another way of decision by division these two equations:
(x^2 + y^2) / xy = 12 / 5

x/y + y/x = 12 / 5 -> 2 2/5 so answer is A
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 02 Apr 2015, 11:26
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xy=5; x^2+y^2=12; (x/y)+(y/x)=?
Simplifying we get (x^2+y^2)/xy =12/5=2*2/5

Hence Answer is A

Thanks,
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 02 Apr 2015, 17:01
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Bunuel
If xy = 5 and x^2 + y^2 = 12, then x/y + y/x =

A. 2 2/5
B. 3 1/7
C. 5 1/3
D. 7
E. 60


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With given values, we first simplify \(x/y + y/x\) :

we get, \((x^2 + y^2)/xy\)
place the given values above and we get
12/5 or 2 2/5

Answer:A
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 03 Apr 2015, 00:08
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Answer = A. 2 2/5

\(\frac{x}{y} + \frac{y}{x} = \frac{x^2 + y^2}{xy} = \frac{12}{5} = 2 \frac{2}{5}\)
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 03 Apr 2015, 00:25
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Bunuel
If xy = 5 and x^2 + y^2 = 12, then x/y + y/x =

A. 2 2/5
B. 3 1/7
C. 5 1/3
D. 7
E. 60


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Answer=A
Simplifying, x/y+y/x=x^2+y^2/xy=12/5=2 2/5
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 06 Apr 2015, 06:20
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Bunuel
If xy = 5 and x^2 + y^2 = 12, then x/y + y/x =

A. 2 2/5
B. 3 1/7
C. 5 1/3
D. 7
E. 60


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MAGOOSH OFFICIAL SOLUTION:
Attachment:
xyequals5_text.PNG
xyequals5_text.PNG [ 8.24 KiB | Viewed 20673 times ]
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 26 Jun 2023, 08:23
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Bunuel
If xy = 5 and x^2 + y^2 = 12, then x/y + y/x =

A. 2 2/5
B. 3 1/7
C. 5 1/3
D. 7
E. 60


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\(\frac{x}{y} + \frac{y}{x}\)

\(= \frac{x^2 + y^2}{xy}\)

\(= \frac{12}{5}\)

\(= 2 \frac{2}{5}\), Answer will be (A)
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If xy = 5 and x2 + y2 = 12, then x/y + y/x = 16 Apr 2026, 21:18
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