GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
If sqrt3 of x = 3
[#permalink]
02 Mar 2018, 15:41
02 Mar 2018, 15:41
Expert Reply
00:00
Question Stats:
95% (00:39) correct
4% (00:25) wrong based on 41 sessions
Hide Show timer Statistics
If \(\sqrt[3]{x} = 3\) and \(x = \sqrt{y}\), what is the value of \(y\)?
enter your value
enter your value
Show: :: OA
729
Re: If sqrt3 of x = 3
[#permalink]
02 Mar 2018, 15:45
02 Mar 2018, 15:45
Expert Reply
Explanation
This is a question you should be aware of the rules of exponents but most of all, you have to use your logic.
Now, for a cube root for being equal to 3, our x must be 27. \(3*3 = 9 *3 =27\). Of course, the inverse process leads us to have x = 27.
The square root of y must have as result our x, which mean our 27. Squaring \(27^2 = 729\).
This is a question you should be aware of the rules of exponents but most of all, you have to use your logic.
Now, for a cube root for being equal to 3, our x must be 27. \(3*3 = 9 *3 =27\). Of course, the inverse process leads us to have x = 27.
The square root of y must have as result our x, which mean our 27. Squaring \(27^2 = 729\).
Re: If sqrt3 of x = 3
[#permalink]
03 Mar 2018, 09:53
03 Mar 2018, 09:53
1
Carcass wrote:
Is there a typo here? Is the questions asking for the value of X or Y?
X would be a number that the cube root is 3 which is 27.
Y would be X squared which 27^2 = 729
