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# If y = (0.36x^8)^(1/2), then y =

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Math Expert
Joined: 02 Sep 2009
Posts: 58421
If y = (0.36x^8)^(1/2), then y =  [#permalink]

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28 Feb 2019, 00:12
00:00

Difficulty:

15% (low)

Question Stats:

66% (00:39) correct 34% (00:40) wrong based on 61 sessions

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If $$y = \sqrt{0.36x^8}$$, then y =

A. 0.06x^2
B. 0.06x^4
C. 0.06x^5
D. 0.6x^2
E. 0.6x^4

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Joined: 18 Aug 2017
Posts: 5027
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: If y = (0.36x^8)^(1/2), then y =  [#permalink]

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28 Feb 2019, 06:41
Bunuel wrote:
If $$y = \sqrt{0.36x^8}$$, then y =

A. 0.06x^2
B. 0.06x^4
C. 0.06x^5
D. 0.6x^2
E. 0.6x^4

$$y = \sqrt{0.36x^8}$$

will be
0.6x^4
IMO E
VP
Joined: 31 Oct 2013
Posts: 1467
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: If y = (0.36x^8)^(1/2), then y =  [#permalink]

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28 Feb 2019, 12:30
Bunuel wrote:
If $$y = \sqrt{0.36x^8}$$, then y =

A. 0.06x^2
B. 0.06x^4
C. 0.06x^5
D. 0.6x^2
E. 0.6x^4

Given,

$$y = \sqrt{0.36x^8}$$

$$\sqrt{(0.6x^4)^2}$$

= $$0.6x^4$$

Re: If y = (0.36x^8)^(1/2), then y =   [#permalink] 28 Feb 2019, 12:30
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