Questions on Algebra: Absolute value answered by real tutors!

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Question 169368: I have come to a point in solving : is this function one-to-one, where the absolute value of a = the absolute value of b. Can this be one to one?
For the record, the problem states: f(x)= |x| - 2
I assigned a and b, and equal them to each other.
|a| - 2 = |b| - 2 ; add two to both sides
|a| = |b|
therefore a = b? or not really? Thank you for your help!!: I have come to a point in solving : is this function one-to-one, where the absolute value of a = the absolute value of b. Can this be one to one?
For the record, the problem states: f(x)= |x| - 2
I assigned a and b, and equal them to each other.
|a| - 2 = |b| - 2 ; add two to both sides
|a| = |b|
therefore a = b? or not really? Thank you for your help!!
Click here to see answer by Edwin McCravy(2087)

Question 168929: Translate the statement into an equation (multiple choice):
"An unknown number is 27 units from zero"
A)
B)
C)
D)
I think it's B, but I'm not sure. Thanks...: Translate the statement into an equation (multiple choice):
"An unknown number is 27 units from zero"
A)
B)
C)
D)
I think it's B, but I'm not sure. Thanks...
Click here to see answer by scott8148(2761)

Question 168899: Solve |7x-4| = 10: Solve |7x-4| = 10
Click here to see answer by Electrified_Levi(89)

Question 168566: For hydrogen to be liquid, its temperature must be within 2 degrees of -275. What inequality in absolut value represents the temperatures at which hydrogen will NOT be liquid?
Please show work & explain.
Thank you so much for helping me!: For hydrogen to be liquid, its temperature must be within 2 degrees of -275. What inequality in absolut value represents the temperatures at which hydrogen will NOT be liquid?
Please show work & explain.
Thank you so much for helping me!
Click here to see answer by mathishard2do(2)

Question 168548: what is the absolute value of 11x-7 <-4 or [11x-7] <-4 I am so lost in this class i know have to do the same to both sides but where to start is my issue: what is the absolute value of 11x-7 <-4 or [11x-7] <-4 I am so lost in this class i know have to do the same to both sides but where to start is my issue
Click here to see answer by jim_thompson5910(9390)

Question 168301: FIND THE PERMITER OF A triangle POSTAGE STAMP with sides 3.1, 2 and 3.8 : FIND THE PERMITER OF A triangle POSTAGE STAMP with sides 3.1, 2 and 3.8
Click here to see answer by jojo14344(888)

Question 168119: three consecutive intergers whose sum is 99: three consecutive intergers whose sum is 99
Click here to see answer by oscargut(667)

Question 168013: why is it impossible for the absolut value of a number to be negative?: why is it impossible for the absolut value of a number to be negative?
Click here to see answer by gonzo(474)

Question 167930: Write an absolute value inequality that represents all numbers n that are more than 3 units from -2. Thanks -Sandy: Write an absolute value inequality that represents all numbers n that are more than 3 units from -2. Thanks -Sandy
Click here to see answer by Katie456(1)

Question 167751This question is from textbook
: I am working on equations with absolute value and I need help with this word problem, please.
The problem reads:
The number of U.S. teenagers in the age category "15-19-years olds" during any year between 1980 and 1998 can be modeled approximately by
T=332/x-11.5/+17000
where T is the number of "15-19-years-olds" in thousands and x is the number of years since January 1, 1980 (U.S. Census Bureau, Current Poplulatioin Reports.) Use the model to determine the year in which the number of 15-19-year olds in the U.S. was 18,700,000 (18,700 thousands).
The book comes up with the answer of 1986 and 1996, I cant even come close to them years....please help. ThanksThis question is from textbook
: I am working on equations with absolute value and I need help with this word problem, please.
The problem reads:
The number of U.S. teenagers in the age category "15-19-years olds" during any year between 1980 and 1998 can be modeled approximately by
T=332/x-11.5/+17000
where T is the number of "15-19-years-olds" in thousands and x is the number of years since January 1, 1980 (U.S. Census Bureau, Current Poplulatioin Reports.) Use the model to determine the year in which the number of 15-19-year olds in the U.S. was 18,700,000 (18,700 thousands).
The book comes up with the answer of 1986 and 1996, I cant even come close to them years....please help. Thanks
Click here to see answer by stanbon(19008)

Question 167745This question is from textbook
: I am working on a chapter on equations with absolute value. I am getting fustrated with this one problem...please help.
3+/4t-1/=8
I have come up with one of the answers as being 3/2 but the other answer I am not getting. The book has the other answer being -1 and I am coming up with
-5/2.This question is from textbook
: I am working on a chapter on equations with absolute value. I am getting fustrated with this one problem...please help.
3+/4t-1/=8
I have come up with one of the answers as being 3/2 but the other answer I am not getting. The book has the other answer being -1 and I am coming up with
-5/2.
Click here to see answer by jim_thompson5910(9390)

Question 167482: -[3+4]+[-5]+[6-10]=: -[3+4]+[-5]+[6-10]=
Click here to see answer by midwood_trail(260)

Question 167368: 5[r+3]>5: 5[r+3]>5
Click here to see answer by midwood_trail(260)

Question 167353: abs l 1/2x +2l = l 3/4x -2 l Find the solution set for the equation: abs l 1/2x +2l = l 3/4x -2 l Find the solution set for the equation
Click here to see answer by stanbon(19008)

Question 160855: This is a problem we had on an algebra test 2y-3=absolute value of -15 pretty sure the answer is nine, but my math teacher says 9,-6
: This is a problem we had on an algebra test 2y-3=absolute value of -15 pretty sure the answer is nine, but my math teacher says 9,-6

Click here to see answer by Alan3354(1443)

Question 166352: Perform the indicated operation. Write the resulting polynomial in standard form.
(-5x^6 - 13x^5 - 19) + (3x^6 + 9x^5 + 3)
o -2x^6 - 4x^5 + 22
o -22x^11
o -2x^6 + 14x^5 + 22
o -2x^6 - 4x^5 - 16: Perform the indicated operation. Write the resulting polynomial in standard form.
(-5x^6 - 13x^5 - 19) + (3x^6 + 9x^5 + 3)
o -2x^6 - 4x^5 + 22
o -22x^11
o -2x^6 + 14x^5 + 22
o -2x^6 - 4x^5 - 16
Click here to see answer by jim_thompson5910(9390)

Question 166317: Find the possible value or values of r in the quadratic equation r2-7r-8=0: Find the possible value or values of r in the quadratic equation r2-7r-8=0
Click here to see answer by stanbon(19008)

Question 166117: Solve (|3x-1|) / (x²+4) ‹ 0. Give a written explanation along with algebraic support.
PLEASE HELP ME!!!: Solve (|3x-1|) / (x²+4) ‹ 0. Give a written explanation along with algebraic support.
PLEASE HELP ME!!!
Click here to see answer by Fombitz(1756)

Question 166127: What are the steps to solve for the absolute value |y| in the following:
|y| - 4 = 3y
Thanks: What are the steps to solve for the absolute value |y| in the following:
|y| - 4 = 3y
Thanks
Click here to see answer by sata001(4)

Question 166070: 2[d + 3] = 8
The bar is a straight line, and I don't know how to type it. It is called the
absolute bar.
THanks for your help!
: 2[d + 3] = 8
The bar is a straight line, and I don't know how to type it. It is called the
absolute bar.
THanks for your help!

Click here to see answer by midwood_trail(260)

Question 166106: Solve the following inequality and list solution in interval notation.
|-3x-5|≥10
Can someone help me with this question, please. Thank you: Solve the following inequality and list solution in interval notation.
|-3x-5|≥10
Can someone help me with this question, please. Thank you
Click here to see answer by jim_thompson5910(9390)

Question 166072: -2[7d] = -14
The bar is a straight line, and I don't know how to type it. It is called the
absolute bar.
THanks for your help!
: -2[7d] = -14
The bar is a straight line, and I don't know how to type it. It is called the
absolute bar.
THanks for your help!

Click here to see answer by gonzo(474)

Question 164981: Solve the following absolute value inequality: I am not quit sure how to do this problem with a fraction. Thank you
½ |x – 2| < 4
: Solve the following absolute value inequality: I am not quit sure how to do this problem with a fraction. Thank you
½ |x – 2| < 4

Click here to see answer by Edwin McCravy(2087)

Question 164906: |x-7|=|2x+1|
x-7=2x+1
-x -x
-7=x+1
-1 -1
-8=x
x-7=-(2x+1)
x=7-(2x+1)
: |x-7|=|2x+1|
x-7=2x+1
-x -x
-7=x+1
-1 -1
-8=x
x-7=-(2x+1)
x=7-(2x+1)

Click here to see answer by MRperkins(77)

Question 164754: Describe in words or by using a graph the following system of absolute value inequalities:

|x| > 3 and |y| > 1
Thank you: Describe in words or by using a graph the following system of absolute value inequalities:

|x| > 3 and |y| > 1
Thank you
Click here to see answer by Mathtut(552)

Question 164404This question is from textbook Prentice Hall Mathematics Algebra 1
: This problem d - 25 = -9 is to be solved by finding the "absolute value" of D.
Solving for d is only a part of what should be your final answer.

This question is for extra credit from a recorded lesson teachlet and I cannot find an answer to it. Can you help with it?
Nina This question is from textbook Prentice Hall Mathematics Algebra 1
: This problem d - 25 = -9 is to be solved by finding the "absolute value" of D.
Solving for d is only a part of what should be your final answer.

This question is for extra credit from a recorded lesson teachlet and I cannot find an answer to it. Can you help with it?
Nina
Click here to see answer by Fombitz(1756)

Question 164420: -(8)+x)=7: -(8)+x)=7
Click here to see answer by padmameesala(34)

Question 164420: -(8)+x)=7: -(8)+x)=7
Click here to see answer by checkley77(3654)

Question 163007: Please help me solve the following question:
Solve and write in interval notation for the solution set:
The absolute value of x+2 greater than or equal to 4
: Please help me solve the following question:
Solve and write in interval notation for the solution set:
The absolute value of x+2 greater than or equal to 4

Click here to see answer by Edwin McCravy(2087)

Question 163798: |2x -4| = 12

thanks for all the help!: |2x -4| = 12

thanks for all the help!
Click here to see answer by joecbaseball(34)

Question 163779: |3x -5|=22

please help solve: |3x -5|=22

please help solve
Click here to see answer by jim_thompson5910(9390)

Question 163776: |2x-4|=12

please help me solve. Thank you!: |2x-4|=12

please help me solve. Thank you!
Click here to see answer by jim_thompson5910(9390)

Question 163374This question is from textbook Algebra 1
: Please help me with this problem! How do you solve and graph this problem y = the absolute value of ( x + 2) - 1?This question is from textbook Algebra 1
: Please help me with this problem! How do you solve and graph this problem y = the absolute value of ( x + 2) - 1?
Click here to see answer by gonzo(474)

Question 163364: The problem is : 20 is 40% of what number
I tried 20 x 40% and i dont think thats right.: The problem is : 20 is 40% of what number
I tried 20 x 40% and i dont think thats right.
Click here to see answer by gonzo(474)

Question 162837: Please help me with this questions,
|5n-6| = 22
This is what I think:
5n-6=22
5n=22+6
5n=28
5n/5 = 28/5
n = 5 3/5
Is this how you go about solving this problem, or am I totally off base???
: Please help me with this questions,
|5n-6| = 22
This is what I think:
5n-6=22
5n=22+6
5n=28
5n/5 = 28/5
n = 5 3/5
Is this how you go about solving this problem, or am I totally off base???

Click here to see answer by Earlsdon(3748)

Question 162766: The directions say to match a function with its graph.
I think I can graph it on my own.
But I am completly confused with how to find out the coordinates. so that I can see which graph matches the function the best, so please help. (:

the function is: f(x) = 3|x|
: The directions say to match a function with its graph.
I think I can graph it on my own.
But I am completly confused with how to find out the coordinates. so that I can see which graph matches the function the best, so please help. (:

the function is: f(x) = 3|x|

Click here to see answer by jim_thompson5910(9390)

Question 162261: x-7=x+7x
x-7=8x
x-x-7=8x-x
0-7=7x
-7=7x
-7/7=7x/7
-1=x
Check:
(-1)-7 ? (-1)+7(-1)
-1-7? -1-7
-8=-8 RIGHT!: x-7=x+7x
x-7=8x
x-x-7=8x-x
0-7=7x
-7=7x
-7/7=7x/7
-1=x
Check:
(-1)-7 ? (-1)+7(-1)
-1-7? -1-7
-8=-8 RIGHT!
Click here to see answer by Alan3354(1443)

Question 162025: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
5x – 4y = 1
-10x + 8y = -3
: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
5x – 4y = 1
-10x + 8y = -3

Click here to see answer by checkley77(3654)

Question 162028: WHICH EQUATIONS OF LINES PASS THROUGH 0,6
Y=6X+5
Y=5X+6
Y=5X+3
Y=4X+6: WHICH EQUATIONS OF LINES PASS THROUGH 0,6
Y=6X+5
Y=5X+6
Y=5X+3
Y=4X+6
Click here to see answer by Electrified_Levi(89)

Question 161293: My teacher gave us a worksheet and one of the problems said:
"The answers to an absolute value problem are graphed below. What was the equation?"
The graph had -12 and 120 graphed. I know that I find the medain number between the two, but then what should I do?: My teacher gave us a worksheet and one of the problems said:
"The answers to an absolute value problem are graphed below. What was the equation?"
The graph had -12 and 120 graphed. I know that I find the medain number between the two, but then what should I do?
Click here to see answer by stanbon(19008)

Question 161106This question is from textbook algebra 1
: Can u help with absolute value and inequalities like |s+4|>2 This question is from textbook algebra 1
: Can u help with absolute value and inequalities like |s+4|>2
Click here to see answer by vleith(1174)

Question 160916: Find all the real values for x so that (5-x) < 2. Write your answer in a sentence.
**** ( ) signifies absolute value: Find all the real values for x so that (5-x) < 2. Write your answer in a sentence.
**** ( ) signifies absolute value
Click here to see answer by stanbon(19008)