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.
|x-8| or |8-x|
[#permalink]
17 May 2022, 01:32
17 May 2022, 01:32
Expert Reply
00:00
Question Stats:
68% (00:38) correct
31% (00:36) wrong based on 29 sessions
Hide Show timer Statistics
Quantity A |
Quantity B |
|x-8| |
|8-x| |
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 project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
Re: |x-8| or |8-x|
[#permalink]
17 May 2022, 09:51
17 May 2022, 09:51
Here are two ways to solve this problem:
1. Visualize on a number line or use general number sense to understand that these are "mirror" expressions of each other, so taking the absolute value into account, the quantities are equal.
2. Plug a number in as x to test. For this example, let's use 10.
10 - 8 = 2. The absolute value of 2 is 2.
8 - 10 = -2. The absolute value of -2 is 2.
Therefore, the answer is (C) the two quantities are equal.
1. Visualize on a number line or use general number sense to understand that these are "mirror" expressions of each other, so taking the absolute value into account, the quantities are equal.
2. Plug a number in as x to test. For this example, let's use 10.
10 - 8 = 2. The absolute value of 2 is 2.
8 - 10 = -2. The absolute value of -2 is 2.
Therefore, the answer is (C) the two quantities are equal.
Re: |x-8| or |8-x|
[#permalink]
17 May 2022, 20:45
17 May 2022, 20:45
1
We know that, |a| = |-a|
So, |x-8| = | - (x-8) | = |8-x|
Both are equal. So, C is the correct option.
So, |x-8| = | - (x-8) | = |8-x|
Both are equal. So, C is the correct option.
