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Three musical tones have frequencies x, y, and z, respectively. If x,
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09 Nov 2015, 00:22
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Three musical tones have frequencies x, y, and z, respectively. If x, y, and z are positive, x/y = y/z, and 2x = z, what is y in terms of x ? (A) 2 (B) \(\sqrt{2}x\) (C) \(\frac{x}{\sqrt{2}}\) (D) x/2 (E) \(\frac{\sqrt{2}}{3}x\)
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Re: Three musical tones have frequencies x, y, and z, respectively. If x,
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09 Nov 2015, 00:58
Bunuel wrote: Three musical tones have frequencies x, y, and z, respectively. If x, y, and z are positive, x/y = y/z, and 2x = z, what is y in terms of x ?
(A) 2
(B) \(\sqrt{2}x\)
(C) \(\frac{x}{\sqrt{2}}\)
(D) x/2
(E) \(\frac{\sqrt{2}}{3}x\) Y^2= XZ, so substitute 2X instead of Z so it becomes 2X^2 therefore Y^2=2X^2, Y= Root of 2 and X, There fore my choice goes for B.



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Re: Three musical tones have frequencies x, y, and z, respectively. If x,
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09 Nov 2015, 01:43
x/y = y/z 1 =>y^2 = xz Now substituting 2x=z , we have y^2=x*2x= 2*x^2 =>y = x* 2^(1/2) Answer B
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Re: Three musical tones have frequencies x, y, and z, respectively. If x,
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21 Oct 2017, 09:26
\(\frac{x}{y}\)=\(\frac{y}{z}\) => \(y^2=xz\) (1) 2x=z Putting the value of z in equation (1) \(y^2=2x^2\) y=\(\sqrt{2}x\) or \(\sqrt{2}x\) Since x,y,z are positive, y=\(\sqrt{2}x\) Answer B. Please give kudos, if u liked my post!
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Re: Three musical tones have frequencies x, y, and z, respectively. If x, &nbs
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