Last visit was: 17 May 2024, 17:45 It is currently 17 May 2024, 17:45

Close

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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Verbal Expert
Joined: 18 Apr 2015
Posts: 28756
Own Kudos [?]: 33335 [3]
Given Kudos: 25245
Send PM
Verbal Expert
Joined: 18 Apr 2015
Posts: 28756
Own Kudos [?]: 33335 [0]
Given Kudos: 25245
Send PM
Intern
Intern
Joined: 17 Oct 2022
Posts: 26
Own Kudos [?]: 17 [0]
Given Kudos: 7
Send PM
Verbal Expert
Joined: 18 Apr 2015
Posts: 28756
Own Kudos [?]: 33335 [0]
Given Kudos: 25245
Send PM
2x-5y=1 [#permalink]
Expert Reply
\(-2^{-2}\)

will be

\(-\frac{1}{4}\)

see more on exponents https://gre.myprepclub.com/forum/gre-ma ... 24948.html
Senior Manager
Senior Manager
Joined: 17 Aug 2019
Posts: 381
Own Kudos [?]: 175 [0]
Given Kudos: 96
Send PM
2x-5y=1 [#permalink]
Carcass wrote:
\(-2^{-2}\)

will be

\(-\frac{1}{4}\)

see more on exponents https://gre.myprepclub.com/forum/gre-ma ... 24948.html


Carcass

if we are -2^2 does that means the negative will remain there even if we have even power ??

in the question, the negative is inside the brackets.
Senior Manager
Senior Manager
Joined: 17 Aug 2019
Posts: 381
Own Kudos [?]: 175 [1]
Given Kudos: 96
Send PM
Re: 2x-5y=1 [#permalink]
1
Carcass wrote:
\(2x-5y=1\)


Quantity A
Quantity B
\([-2]^{ 10y-4x }\)
\([4]^{5y-2x}\)



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.


Part of the Skill Builder Project
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials
GRE Geometry Formulas
GRE - Math Book


My solution is as follows:

I first simplified
quantity A :
\(\frac{((-2)^10y)}{(-2^4x)}\)

Quantity B :
I simplified 4
\frac{[fraction]2^(10y)}{2^(4x)}[/fraction]

I think the answer is C
Verbal Expert
Joined: 18 Apr 2015
Posts: 28756
Own Kudos [?]: 33335 [1]
Given Kudos: 25245
Send PM
2x-5y=1 [#permalink]
1
Expert Reply
rule of exponent


\(x^{-n}=\frac{1}{x^n}\)

\(7^{-2}=\frac{1}{7^2}\)

so having \(-7^{-2}= - \frac{1}{7^2}=-\frac{1}{49}\)

I am interpreting the question this way \((-)(2)\)

Otherwise the answer would be C.

The OA reports B so should be as above
User avatar
GRE Prep Club Legend
GRE Prep Club Legend
Joined: 07 Jan 2021
Posts: 4501
Own Kudos [?]: 68 [0]
Given Kudos: 0
Send PM
Re: 2x-5y=1 [#permalink]
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Prep Club for GRE Bot
[#permalink]
Moderators:
Moderator
1085 posts
GRE Instructor
218 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne