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If x is a positive number and 1/2 the square root of x is equal to 2x,
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05 Nov 2015, 12:27
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81% (01:09) correct
If x is a positive number and 1/2 the square root of x is equal to 2x, then x =
A. 1/16
B. 1/4
C. 1/2
D. 2
E. 8
A. 1/16
B. 1/4
C. 1/2
D. 2
E. 8
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Re: If x is a positive number and 1/2 the square root of x is equal to 2x,
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08 Mar 2018, 11:43
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Bunuel wrote:
If x is a positive number and 1/2 the square root of x is equal to 2x, then x =
A. 1/16
B. 1/4
C. 1/2
D. 2
E. 8
A. 1/16
B. 1/4
C. 1/2
D. 2
E. 8
We can create the equation:
(1/2)√x = 2x
Squaring both sides of the equation, we have:
1/4(x) = 4x^2
x = 16x^2
1 = 16x
1/16 = x
Answer: A
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Re: If x is a positive number and 1/2 the square root of x is equal to 2x,
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05 Nov 2015, 13:18
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1/2 of sqrt(x) = 2x, which means that sqrt(x) = 4x
or x = 16x^2 -> divide by x
1=16x
x=1/16
A.
or x = 16x^2 -> divide by x
1=16x
x=1/16
A.