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03 Sep 2017, 06:03
Kudos
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
71% (02:30) correct
29%
(02:34)
wrong
based on 659
sessions
History
Date
Time
Result
Not Attempted Yet
If \(\sqrt{x} =20\) and \(\sqrt{y} =16\), then \(\frac{\sqrt{x}+\sqrt{y}}{\sqrt{x+y}}=\)
A. \(9\sqrt{41}\)
B. 2
C. \(\frac{9\sqrt{41}}{41}\)
D. 1
E. 9/41
A. \(9\sqrt{41}\)
B. 2
C. \(\frac{9\sqrt{41}}{41}\)
D. 1
E. 9/41
03 Sep 2017, 08:13
Kudos
Bookmarks
Bunuel
Hi
\(\sqrt{x} =20.....x=400\) and \(\sqrt{y} =16,.....y=256\),
\(\frac{\sqrt{x}+\sqrt{y}}{\sqrt{x+y}}=\frac{20+16}{√(400+256)}=\frac{36}{√656}=\frac{36}{4√41}=\frac{9√41}{41}\)
C
General Discussion
