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

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 Algebra: Inverse operations for addition and multiplication, reciprocals Solvers Lessons Answers archive Quiz In Depth

 Question 166215: Hi there please help I am parent trying to help my eldest on Equation in year 9, this the question, This is where I am stuck because I don't if my equation is correct or not? thanks Nick. Click here to see answer by ankor@dixie-net.com(15660)
 Question 166215: Hi there please help I am parent trying to help my eldest on Equation in year 9, this the question, This is where I am stuck because I don't if my equation is correct or not? thanks Nick. Click here to see answer by scott8148(6628)

 Question 166272: My problem is to find an inverse of the function f(x)=(3x+7)^3-5. I know this is started as y=(3x+7)^3-5. What steps follow and what is the answer? Thanks for your help! Click here to see answer by jim_thompson5910(28598)

 Question 166441: Here is my worksheet problem: The function f(x)=|x+3|+9 is NOT a one-to-one function. The points (19,31) and (__,__) prove that f is not a one-to-one function. What is the missing set of points? Thanks for your help! Linda Click here to see answer by stanbon(57387)

 Question 168020: Help! Is the equation Pressure=force/area a joint variation? How do you know? Click here to see answer by gonzo(654)

 Question 168656: A sum of a number and 7 times it's reciprocal is (16/3). Please solve for the number. Click here to see answer by Mathtut(3670)

 Question 161230: 10 x n = 8 this came out the Fifth Grade Harcourt Practice book Click here to see answer by Alan3354(30993)

 Question 170979: write the equation for the inverso of F(x). Show how you did it please :) F(x)=2x+4. thank you for all of your help :) Click here to see answer by Mathtut(3670)

 Question 171756: What is the inverse of F(x)= (3x+5)/2? Write the answer in the form of F^-1(x)= Click here to see answer by stanbon(57387)

 Question 172029: How do you flip the fraction if it is for example 2 1 and a half times 8 Click here to see answer by Alan3354(30993)

 Question 173489: write an equation to show the property of one in mutiplication Click here to see answer by Mathtut(3670)

 Question 175511: How can I find the answer to a problem like this one ? 5m1=24 Click here to see answer by Alan3354(30993)

 Question 176199: In bowling a handicap is a change in score to adjust for differences in players’ abilities. You belong to a bowling league in which each bowler’s handicap h is determined by his or her average a using this formula: h = 0.9(200 - a) (If the bowler’s average is over 200, the handicap is 0.) Find the inverse of the function. Then find your average if your handicap is 27. Click here to see answer by solver91311(16897)

 Question 176475: If two numbers are opposite of each other, are their reciprocals also opposite of each other? Click here to see answer by Mathtut(3670)

 Question 178677: Hi I typed my email address wrong it has been a frustrating evening trying to solve this problem. -14/23=2/7-1/7x We did the following -14/23-2/7=2/7-2/7-1/7x -98/161-46/161=-1/7x After that we get confused Click here to see answer by stanbon(57387)

 Question 178673: Hi I am a parent trying to help out my child work thru a problem in pre algrebra the problem is -14/23= 2/7-1/7x We start out doing -14/23-2/7=2/7-2/7-1/7x which is -98/161-46/161=-1/7x after that we get confused. Are we on the right track Click here to see answer by Alan3354(30993)

 Question 179329: is this a associative of property of multiplication(3)(-9)=(-9)(3) Click here to see answer by MathLover1(6638)

 Question 179547: How would you do question 2 a,b+c on page 32 and page 33 question 5 iii. Thank you Click here to see answer by Alan3354(30993)

 Question 179838: What is an inverse? Like an inverse of 1,2,3,4? I have never heard of this? That is the question??? Click here to see answer by stanbon(57387)

 Question 180089: if the reciprocal of x+1 Is x-1 determine x Click here to see answer by stanbon(57387)

 Question 180448: An electric current (c) varies inversely as the resistance (r) of the circuit. c1= 6 amps, c2=? r1=115 ohms, r2=70 ohms. The missing proportion is? Click here to see answer by Mathtut(3670)

 Question 180443: The attraction (A) betwen a magnet and a bar of iron varies inversely as the square of the distance (d) between the magnet and the bar of iron. The attraction between the two is 2 newtons when the distance is 3 cm. The measure of the attractin when the distance is 0.5 cm is? Click here to see answer by Mathtut(3670)

 Question 180583: how do i figure out how to do f(x)=x^3+2?? Click here to see answer by user_dude2008(1861)