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compare square root of 9 and cube root of 27
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22 Apr 2018, 13:59
22 Apr 2018, 13:59
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Question Stats:
85% (00:20) correct
15% (00:28) wrong based on 40 sessions
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Quantity A |
Quantity B |
\(-\sqrt{9}\) |
\(\sqrt[3]{-27}\) |
A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
Drill 1
Question: 10
Page: 354
Question: 10
Page: 354
Re: compare square root of 9 and cube root of 27
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22 Apr 2018, 14:15
22 Apr 2018, 14:15
1
Expert Reply
Explanation
In Quantity A, evaluate the root first, then attach the minus sign: \(-\sqrt{9}=-3\) ; this is equivalent to Quantity B: \(\sqrt[3]{-27}=-3\). Thus, the answer is choice (C).
In Quantity A, evaluate the root first, then attach the minus sign: \(-\sqrt{9}=-3\) ; this is equivalent to Quantity B: \(\sqrt[3]{-27}=-3\). Thus, the answer is choice (C).
Re: compare square root of 9 and cube root of 27
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16 May 2018, 01:57
16 May 2018, 01:57
sandy wrote:
Explanation
In Quantity A, evaluate the root first, then attach the minus sign: \(-\sqrt{9}=-3\) ; this is equivalent to Quantity B: \(\sqrt[3]{-27}=-3\). Thus, the answer is choice (C).
In Quantity A, evaluate the root first, then attach the minus sign: \(-\sqrt{9}=-3\) ; this is equivalent to Quantity B: \(\sqrt[3]{-27}=-3\). Thus, the answer is choice (C).
Dear Sandy,
I got the answer right however I dont understand why have you used - sign? Will be thankful if you can elaborate a bit.
