Questions on Algebra: Inverse operations for addition and multiplication, reciprocals answered by real tutors!

Algebra ->  Inverses -> Questions on Algebra: Inverse operations for addition and multiplication, reciprocals answered by real tutors!      Log On


   



Tutors Answer Your Questions about Inverses (FREE)


Question 7096: solve 2x - 5 = 5x + 13
Click here to see answer by longjonsilver(2297) About Me 

Question 7402: I am really struggling in math and the book is helping alot because it explanes everything with examples and the problem i am trying to do has no example in the book i am hopeing you can help me solve it or will show me a good example.
#110. Find the reciprocal of the number.
-12.1/-0.11
All other questions have fractions but this one dosent.
thank you - Amy

Click here to see answer by bonster(299) About Me 

Question 7514: Please help me with this:
Multiply: 3(9x+7)

Click here to see answer by bonster(299) About Me 

Question 7750: x/5 - x+2/3 = 1/15
I can't seem to get this, help please?

Click here to see answer by Earlsdon(6294) About Me 

Question 8772: please help me solve this equation: 0.5w=0.35
Click here to see answer by FSAN85(6) About Me 

Question 9077: what is 32% as a reduced fraction? (thank you for the help)
Click here to see answer by longjonsilver(2297) About Me 

Question 9080: which of the numbers 51,81,and111 is a composite number? (P.S thank you so very much)
Click here to see answer by prabhjyot(165) About Me 

Question 9074: please help me solve this problem:what decimal numberis equal to 12 percent?

Click here to see answer by sabanasir(22) About Me 

Question 9049: what is the relationship of (a-b)(a+b)
Click here to see answer by sabanasir(22) About Me 

Question 9258: Click on the link to solve this problem:
I'm doing the review section in my calculus class, but it's been over two years since i took any math...
The problem is to find the inverse of an equation, input a given number and solve. However, the review section on inverse only give simple equations, the ones in the homework are more complex..
find the inverse of:
f%28x%29=x%5E3%2B2x-1
So I made f(x) into "y" and I exhanged it with x so it now looks like
x=y%5E3%2B2y-1
I start solving for y
x%2B1=y%5E3%2B2y
This is where I start to get stuck I've factored, but it still leaves a y
x%2B1=y%28y%5E2%2B2%29
or
I've tried to cube root it, but then I still have a y under the radican
x%2B1%5E%281%2F3%29=%28y%5E3%2B2y-1%29%5E%281%2F3%29
I'm stuck..
help please,
thank you

Click here to see answer by ichudov(507) About Me 

Question 8644: (5c-7)(-3)=
Click here to see answer by ichudov(507) About Me 

Question 9075: what digit is in the thousands' place in 79,582.3416 (thank you for your help)
Click here to see answer by CharStar(110) About Me 

Question 10060: 8=v%2F15
Click here to see answer by bonster(299) About Me 

Question 9546: I can't understand this stuff.could you please help me.
y-3/4=5/6

Click here to see answer by bonster(299) About Me 

Question 9079: what is the ratio of the number of nickles in a quarter to the number of quarters in a dollar?(thank you for your help)
Click here to see answer by bonster(299) About Me 

Question 9078: what is 7+7x7-7divided by 7?(thank you for your help)
Click here to see answer by bonster(299) About Me 

Question 9076: of the 100students that took math 76, 34 earned A's. What percent of the students earned A's?(thank you for the help)
Click here to see answer by bonster(299) About Me 

Question 11975: To whomever answers this question you will need a pencil and paper to draw this problem out! so that you can see exactly what my circle looks like.
1.draw a small round circle.
2.draw a horozontal dine throuhg the middle.
3.put a dot in the middle of the circle.
4.write 4in. over the dot.
Now your circle looks exactly like mine.
Now here is the question..... Find the circumference of the circle at the right.Now the circle at the right looks like the circle that I just showed you how to draw. And I don't know how to find the circumference of a circle. So can you pleeze help me understand this question? (Oh and the possible answers to this question are .........12.56in, 6.28in, 1,265in, or none of these)

Click here to see answer by Earlsdon(6294) About Me 

Question 12241: please help me with this problem.
2/7x2&1/8x3=
The answers are.....6 & 1/28, 9/4, 1 & 23/28, or none of these.

Click here to see answer by elima(1433) About Me 

Question 12469: What is the answer to -3/4*4/9?
Click here to see answer by maribeth_abella(11) About Me 

Question 12815: Is it correct to say the reciprocal of .25 is 1/.25 or do you convert the decimal to a fraction 25/100 and then flip?
Click here to see answer by AdolphousC(70) About Me 

Question 12956: To whomever gets this problem. I know that this is probably in the wrong catagory but I couldn't find the right one. I don't know if you'll know what a function table looks like so here is how you draw the one mine looks like.But first here is the question...Find the misssing number on the function table. And here is how to draw one.
1. Draw a rectangle.
2. Draw a horozontal line going through the rectangle.
3. Draw three lines going up and down to seperate the rectangle into four parts.(In all you should have eight squares.)
4. On the top row you should have X 2 4 5.
5. On the bottom row you should have 2x-3 1 5 ?
Here are the answers to my question.....9, 7, 4, or none of these.
Thank you for the help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Click here to see answer by longjonsilver(2297) About Me 

Question 13696: -10 + (+3)=
The answers are....7, -13, -7, 13.
Thank you for the help.

Click here to see answer by liltokker(1) About Me 

Question 14074: How do I solve the equation 42 divided by z=7?
Click here to see answer by elizabeth2005(20) About Me 

Question 9069: please help me solve this equation:4/5+0.25(decimal answer)
Click here to see answer by elizabeth2005(20) About Me 

Question 14212: b-9=-19

Click here to see answer by elima(1433) About Me 

Question 15082: how do i figure out the equation do i add multiply or divide 7n>84 on this math problem there is also a line under the greater than sign but didnt know how to type it that way
Click here to see answer by bam878s(77) About Me 

Question 15666: how do i find the inverse of Y=4x and y=x-2
Click here to see answer by venugopalramana(3286) About Me 

Question 15757: I need help with this question
5+7x=26
So far I have
5+7x=26
-5 -5
________
x=21

Click here to see answer by babygurl08(1) About Me 

Question 17106: I am trying to solve an inverse operation problem using fractions.
the problem is
8/11-x=2/11
I must show work, but am having a problem solving the correct way. I know the answere is 6/11, but how am I finding that.
I have tried
8/11-x+x=2/11+x
8/11=2/11+x
8/11-2/11=2/11-2/11+x
6/11+x

Click here to see answer by rapaljer(4671) About Me 

Question 17065: What is the exact explanation of inverse when used in algebra? For school i need to define the term inverse.
Click here to see answer by tjnw79(57) About Me 

Question 17589: add using the least common denominator
2/3 + 1/6=

Click here to see answer by whisper(27) About Me 

Question 18675: is the opposite reciprocal of 1/-2.5 ....2.5/1?
Click here to see answer by Alwayscheerful(414) About Me 

Question 14216: What is the inverse operation of multiplication for -9/4
Click here to see answer by piglet162431(90) About Me 

Question 13694: Nine is 3/5 of what number?
The answers are....3, 15, 27, or none of these
Thank you for the help!!!!!

Click here to see answer by piglet162431(90) About Me 

Question 9070: please help me solve this equation:0.8divided by 1/4
Click here to see answer by piglet162431(90) About Me 

Question 5985: The reciprocal of -2 is,....
Click here to see answer by piglet162431(90) About Me 

Question 22194: A nonzero integer number multiplied by its inverse is always one. True or false?
Click here to see answer by elima(1433) About Me 

Question 22499: How do you solve:
3/4m-12=4
Thanks!
Cindy

Click here to see answer by kendra4227(8) About Me 

Question 20818: 16=10/3a

15/7y=3

14=-7/9b

can you please show me so i can help my son i'm so rusty with algebra



Click here to see answer by stanbon(75887) About Me 

Question 22833: a2 + b12 = ?
Click here to see answer by wuwei96815(245) About Me 

Question 23017: I need help on.....
on one of my homework problems i don't understand how to write a equation in slope-intercept form.... like for example one of my questions says
it shows a chart
Contains- Is perpendicular to.....
(3,-5) 5x+2y=10
i'm not asking for the answer, im just wondering what the steps are to solve the problem.
please e-mail me back soon
thanks

Click here to see answer by Earlsdon(6294) About Me 

Question 23441: 4/3u-6=7/3u+8 Can You help me figure this problem out?
Click here to see answer by rapaljer(4671) About Me