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

Tutors Answer Your Questions about Inverses (FREE)

Question 751128: Hello i have one more question to ask and that is, what is the additive inverse of -7x2 + y? Is it 7x^2-y, or something else??
Click here to see answer by jim_thompson5910(28595)

Question 751128: Hello i have one more question to ask and that is, what is the additive inverse of -7x2 + y? Is it 7x^2-y, or something else??
Click here to see answer by josgarithmetic(1526)

Question 751191: If y varies inversely as x, and y=18 when x=3, find y when x = 8.
y=____(simplify your answer.)

Click here to see answer by tommyt3rd(582)

Question 751191: If y varies inversely as x, and y=18 when x=3, find y when x = 8.
y=____(simplify your answer.)

Click here to see answer by nerdybill(6960)

Question 751054: Sorry I do not know which category of algebra this question comes under.
8x - 6 = ?
if x = -1
Click here to see answer by rothauserc(208)

Question 751059: If y varies inversely as x, and y=14 when x=5, find y when x=8.
y=____(simplified).
Click here to see answer by Cromlix(353)

Question 749888: What is the inverse of f(x) = 3x − 15?
Click here to see answer by mathbird(71)

Question 748950: if n/5=17, which inverse operation will find n?
Click here to see answer by stanbon(57361)

Question 748950: if n/5=17, which inverse operation will find n?
Click here to see answer by Edwin McCravy(8909)

Question 728277: the sum of a number and 7 is -37
Click here to see answer by tommyt3rd(582)

Question 747737: is operation is an inverse process of addition ?
Click here to see answer by Alan3354(30993)

Question 747799: I'm olny in the 2nd grade and I'm going to the 3rd grade and I need to know how to do algebra,how do you do algebra.
Click here to see answer by Alan3354(30993)

Question 747659: Hi, I need your help a problem word:
Five times the reciprecal of a number equals the sum of 3/2 the reciprecal of the number and 7/6. What is the number?
Thank you.
Click here to see answer by stanbon(57361)

Question 716850: How do I show my son how to solve this math problem:
4/5 times ___ = 2/5

Click here to see answer by MathTherapy(1425)

Question 716850: How do I show my son how to solve this math problem:
4/5 times ___ = 2/5

Click here to see answer by kekegeter (57)

Question 747428: are f(x) and g(x) inverses?
f(x)= (2)/(x+6) , g(x)= (6x+2)/(x)
Click here to see answer by josgarithmetic(1526)

Question 740574: x^2+x/x MULTIPLIED BY 3/x+2
I got 3(x+1)/x+2.
Could you please show me your working for this problem as I am trying to write notes for our exams on this and we need correct working to score the points :)
sorry about writing "Multiplied by" in the middle i cant find that button on my key board :)
Click here to see answer by kekegeter (57)

Question 742898: Rewrite the expression
log2x+5log2y−5log2z
as a single logarithm log2A. Then the function
Click here to see answer by tommyt3rd(582)

Question 745244: / means fraction
5/9=r+1/6????
Click here to see answer by rothauserc(208)

Question 739648: Find the inverse function, if it exists of f(x)=5/(x-4)
Click here to see answer by MathLover1(6634)

Question 738446: If I have 6x-5=19 what is x ?

Click here to see answer by rfer(12662)

Question 735232: What is -5n = 30
Click here to see answer by jim_thompson5910(28595)

Question 734940: how do i find the inverse equation to 1/3x?2
Click here to see answer by Alan3354(30993)

Question 731958: If the value of x is not equal to zero,
1/x is called the inverse of x. On the answer
sheet write two such numbers (with their inverses) whereby the inverse of the
greater number is greater than the inverse of the smaller number.
Click here to see answer by lynnlo(4164)

Question 725660:
Click here to see answer by General_Lee87(54)

Question 724760: 3/4 + n = 1
Click here to see answer by jim_thompson5910(28595)

Question 723882: Use the communative law of multiplication to write an equivalent expression for s+5t
Click here to see answer by MathLover1(6634)

Question 720281: I know the solution but I don't know how to get there. R=r/1-t solve for t
Click here to see answer by Simnepi(204)

Question 719593: what is the inverse of 3/4x

Click here to see answer by checkley79(3050)

Question 717771: if q and f are inverse functions and q(2)=10, What is f(4)?
Click here to see answer by DrBeeee(378)

Question 717175: I need help finding the inverse for
f(x)= 2x-1/3

Click here to see answer by solver91311(16897)

Question 717078: Asked: inverse function of x = y^2 - y
already done:
y = x^2 - x
But how do I get a function with y=... out of this?
Is this possible?
Click here to see answer by jsmallt9(3296)

Question 715908: Explain, in complete sentences, how you would use the elimination method to solve the following system of equations. Provide the solution to the system.
2x - 5y = -12
3x - 4y = 3
Click here to see answer by stanbon(57361)

Question 714911: design a polygon that is not a rectangle and has an area of eight square unit.

HElP ME PLEASE
Click here to see answer by jim_thompson5910(28595)

Question 713105: what is the solution of x-12=8?

Click here to see answer by Jamil Ahmed Tanjum(3)

Question 712502: what is the inverse operation of:
f(x)=1/5x+12
Click here to see answer by ankor@dixie-net.com(15656)

Question 710214: solve for g: r=(pi)*(g(r))^2

Click here to see answer by MathLover1(6634)

Question 710074: If five carpenters can finish 30 tables in 2 days, how long will it take 8 carpenters to finish 100 tables?
Click here to see answer by sachi(392)

Question 709347: 1. )what is the inverse equation to A=f(r)= (pi)r^2 , r is >or= 0 ?
2.) solve: f(g(x)) using f(x)=3x-1 and g(x)=1-x^2
Click here to see answer by josgarithmetic(1526)

Question 706314: 8t+13=3 I have tried subtracting 13 from both sides getting 8t= -10 now what?
Click here to see answer by nerdybill(6960)

Question 702122: 2(y-3)=4y+6
Click here to see answer by sofiyac(695)

Question 702011: an arena bought 3248 hot dog wieners to sell at a game.
there are 8 buns in each packages.
how many packages does the arena need to buy.
PLEASE HELP ME.
Click here to see answer by jim_thompson5910(28595)

Question 701544: How can you determine if this equation is a direct variation and what the constant is?
y+8= -x
Thank you
Click here to see answer by jim_thompson5910(28595)

Question 700976: what should be added to both sides of this equation to solve for the variable?
m+(-9)=12
Click here to see answer by checkley79(3050)

Question 700274: -6=a/15

Click here to see answer by rfer(12662)

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