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Sub 505 (Easy)|   Algebra|   Roots|      
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Bunuel
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If 1/x = 0.25^(1/2), what does x equal? 04 Mar 2018, 23:20
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C
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5% (low)

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80% (00:41) correct 20% (00:52) wrong based on 279 sessions

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If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20
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C
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Bunuel
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If 1/x = 0.25^(1/2), what does x equal? 04 Mar 2018, 23:50
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Bunuel
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20
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7. Algebra



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If 1/x = 0.25^(1/2), what does x equal? 05 Mar 2018, 05:52
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Bunuel
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20
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Given: \(\frac{1}{x} = \sqrt{0.25}\)

Squaring on both sides, we get \(\frac{1}{x^2} = 0.25\) -> \(x^2 = \frac{1}{0.25} = \frac{100}{25} = 4\)

Therefore, x = \(\sqrt{4}\) = 2(Option C)
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If 1/x = 0.25^(1/2), what does x equal? 05 Mar 2018, 06:54
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Bunuel
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20
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\(\frac{1}{x} = \sqrt{0.25}\)

Or, \(\frac{1}{x} = \sqrt{\frac{25}{100}}\)

Or, \(\frac{1}{x} = \frac{5}{10}\)

So, \(\frac{1}{x} = 0.50\), Answer must be (B)
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If 1/x = 0.25^(1/2), what does x equal? 06 Mar 2018, 11:21
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Bunuel
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20
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We can solve for x:

1/x = √0.25

1/x = 0.5

1 = 0.5x

1/0.5 = x

2 = x

Answer: C
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If 1/x = 0.25^(1/2), what does x equal? 06 Mar 2018, 11:47
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Abhishek009
Bunuel
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20
\(\frac{1}{x} = \sqrt{0.25}\)

Or, \(\frac{1}{x} = \sqrt{\frac{25}{100}}\)

Or, \(\frac{1}{x} = \frac{5}{10}\)

So, \(\frac{1}{x} = 0.50\), Answer must be (B)
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Answer must be C not B
1/x^2=25/100
1/x=1/2
x=2
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If 1/x = 0.25^(1/2), what does x equal? 06 Mar 2018, 11:56
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Abhishek009

\(\frac{1}{x} = \sqrt{0.25}\)

Or, \(\frac{1}{x} = \sqrt{\frac{25}{100}}\)

Or, \(\frac{1}{x} = \frac{5}{10}\)

So, \(\frac{1}{x} = 0.50\), Answer must be (B)
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Hey Abhishek009 ,

You did everything correct but the last step.

We are asked to determine x not 1/x. Hence, answer must be 2 i.e
C :)
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If 1/x = 0.25^(1/2), what does x equal? 06 Mar 2018, 12:06
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0.25 = 1/4
^ 1/2 = sqrt(everything that is raised to this power)
(1/2)^1/2 = sqrt(1/4) = 1/2
1/x = 1/2
x=2
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If 1/x = 0.25^(1/2), what does x equal? 11 Mar 2018, 04:54
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Bunuel
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20
Show more

Given: \(\frac{1}{x} = \sqrt{0.25}\)

Question : x =?

\(\frac{1}{x^2}\) = \(\frac{25}{100}\)

\(\frac{1}{x^2}\) = \(\frac{1}{4}\)

\(x^2\)= 4

x =\(\sqrt{4}\)

x = 2

(C)
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If 1/x = 0.25^(1/2), what does x equal? 05 Oct 2024, 16:07
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