# 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 102444: The sum of a number and its reciprocal is 5/2. What is the number and reciprocal? Click here to see answer by stanbon(57219)
 Question 102444: The sum of a number and its reciprocal is 5/2. What is the number and reciprocal? Click here to see answer by Fombitz(13828)

 Question 103340: This is coming from my sons practice worksheets. I don't have a textbook to use as reference. What is the multiplicative inverse of 5/4? Click here to see answer by HyperBrain(694)

 Question 103926: Determine the value of k when: q is inversely proportional to the sum of x and y. If x=0.5 and y=0.7, then q=1.4 Please help! Click here to see answer by jim_thompson5910(28476)

 Question 105068: If y varies inversely as x and y=7 when x=14, find x when y=2 Click here to see answer by HyperBrain(694)

 Question 106336: How do I solve: c/2(fraction c over 2)= 7 Click here to see answer by scott8148(6628)

 Question 106326: given problems where we are given a sum and asked to "find two mixed numbers that have the given sum" some i can figure out like: answer was 6 1/3. 6 1/3 = 19/3 x 1/2 =19/6 = 3 1/6 what i cannot figure out is this: answer is 3/4 how do i find two mixed numbers to equal a simple fraction? Click here to see answer by scott8148(6628)

 Question 106197: it says express as a percent round to the nearest tenth if needed ok what is 3^4 this^means over Click here to see answer by BurningFlame_marc(77)

 Question 107784: There was not a section on combining like terms. I do,however know that inverse operations plays a big role in combining like terms. My question is how to you combine like terms? Click here to see answer by lauramg012(4)

 Question 96664: If f(x)= 5x+1, the what is its inverse function? Click here to see answer by HyperBrain(694)

 Question 108982: There was a party and everyone shook everyone's hands. There were 66 handshakes!! How many people were at the party??????????? Click here to see answer by MathLover1(6614)

 Question 110861: 1. If x + a/x = b then find the value of (x^2 + bx + a)/(bx^2 - x^3) 2. If x + 1/x = 99, find the value of 100x/(3x^2 + 103x + 3) Question from Tata Mc Graw-Hill NTSE book Click here to see answer by edjones(7569)

 Question 111759: find the inverses of the following function f(x)= 5_______ 2x+10 Click here to see answer by chitra(359)

 Question 112008: i am having problems with 45 divided by (-9)= x Click here to see answer by MathLover1(6614)

 Question 113164: please help me solve 4/5x=5/4 i know i need to flip the 4/5x but i keep getting confused i think the answer is 1.5 if it is im just confused on the check Click here to see answer by stanbon(57219)

 Question 114204: Simplify the expression. Write the result using positive exponents only. 5^-1 + 2^-1 Click here to see answer by MathLover1(6614)

 Question 114569: I have been working on this problem for about an hour. I am ready to toss it out the window! 1) Let f(x) compute the time in hours to travel x miles at 58 miles per hour. 2)What does f-1(x) compute? Thanks so much. Click here to see answer by jim_thompson5910(28476)
 Question 114569: I have been working on this problem for about an hour. I am ready to toss it out the window! 1) Let f(x) compute the time in hours to travel x miles at 58 miles per hour. 2)What does f-1(x) compute? Thanks so much. Click here to see answer by stanbon(57219)

 Question 114917: If y is directly proportional to x and inversely proportional to the square of z, and if y=0.384 when x=6 and z=5, find the constant of variation. Click here to see answer by stanbon(57219)

 Question 117241: I'm having trouble figuring out the Brain Game question titled CD Sort. Your friend has a collection of CD: 2/3 of the CD's have booklets, 1/2 of the CD's are singles, and 1/4 are singles with booklets. All but two of the CDs are eith singles or have booklets or both. How many CDs does your friend have? Thanks for your help. Click here to see answer by scott8148(6628)

 Question 117249: There exists an equation to the line: y=-5/4x+7 that goes through the x-intercept of the line: -3x-17y=9. What is the equation in slope-intercept form? Click here to see answer by misscrt(37)

 Question 118540: How do i find the inverse of this function? y= 3x-2 Click here to see answer by stanbon(57219)