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Decending Order of Equations

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Decending Order of Equations

by tsmith93 » Thu Mar 04, 2010 3:46 am
2*a = b/2* square root of 2 = c/2.5*square root of 2. In which of the following are a, b, and c arranged in decending order of value?

(A) a, b, c
(B) b, c, a
(C) a, c, b
(D) c, b, a
(E) c, a, b
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by sanju09 » Thu Mar 04, 2010 4:43 am
tsmith93 wrote:2*a = b/2* square root of 2 = c/2.5*square root of 2. In which of the following are a, b, and c arranged in decending order of value?

(A) a, b, c
(B) b, c, a
(C) a, c, b
(D) c, b, a
(E) c, a, b
We have b = 4 √2 a and c = 5 √2 a,

Now, if a > 0, then [spoiler]D[/spoiler] is right, and if a < 0, then [spoiler]A[/spoiler] is right. What's a by the way, tsmith93?
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