# 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 120768: I submitted this question the other day, but don't believe that I received a response yet. The question is: Determine those real numbers a for which the opposite of a is the same as the reciprocal of a. I understand the difference between opposite and reciprocal, but I still don't understand what the answer would be. Any help would be greatly appreciated!!! Click here to see answer by Fombitz(13828)

 Question 122094: how do you solve these 2 questions: 3/4c=12 and 11/12=3/4h Click here to see answer by checkley71(8403)

 Question 125574: 1/2(x-5)=x/4 I have tried this question so many ways, my head hurts. I can't figure it out! I only need one example and I will be able to complete my homework, unfortunately the text book does not give me an example. I have plans to go into school early if you can't help, but I thought I would give this a shot. I like to work things out on my own, but this is review from last year and after not seeing math problems for a year I'm struggling. Thanks Click here to see answer by ankor@dixie-net.com(15649)
 Question 125574: 1/2(x-5)=x/4 I have tried this question so many ways, my head hurts. I can't figure it out! I only need one example and I will be able to complete my homework, unfortunately the text book does not give me an example. I have plans to go into school early if you can't help, but I thought I would give this a shot. I like to work things out on my own, but this is review from last year and after not seeing math problems for a year I'm struggling. Thanks Click here to see answer by solver91311(16877)

 Question 128727: x varies directly as the square of s and inversely as t. how does x change when s is doubled? when both s and t are doubled? Click here to see answer by stanbon(57323)

 Question 130334: Please help me solve this equation: my work sheet says: "A bag contains 5 green marbles and 3 blue marbles. What is the probability of drawing a blue marble, then another blue marble, then a green marble, replacing the marble after each draw?" and then it has choices of: [A] 13/8 [B] 75/512 [C] 45/512 [D] 11/8 sorry that was so long! thank you so much! Click here to see answer by edjones(7569)

 Question 131543: Find a number such that 1 less than the number divided by the reciprocal of the number is equal to 1. (Leave the answeres in exact form, that is with the square root.) Click here to see answer by edjones(7569)

 Question 131849: How do I work this Problem out 2(3h-2)-2h=2(h-3)h=? Thanks Click here to see answer by benni1013(197)

 Question 132013: Will you please help me with this?? The amount of candy shared by the class varies inversely with the number of students in the class. If there are 120 pieces of candy, how much would each student receive in a class of 30? Click here to see answer by stanbon(57323)

 Question 132478: 2( x+3) = 10 4x - 2x + 3 = 2 x + 2 x - x Click here to see answer by checkley71(8403)

 Question 132493: Hello can you please help me? I'm in 6th grade. Thank you Multiplication -13 X 3 8 X -3 Division -18 divided by 3 8 divided by -3 Solve x=-7 + -23 n + -7= -11 Click here to see answer by stanbon(57323)

 Question 134741: Find the inverse of f(x)= 4-x divded by x+6 a. Sate the domain b. State the domain of f1(x) c. State the range of f(x) Click here to see answer by jasmine4195(3)

 Question 134933: Determine whether the following pairs are invers of eachother a. f9x0=8x-7 and g(x)=x+8/7 b. f(x)= 1/x and g(x)= 1/x c. f(x)= 2x+3/x-1 and g(x)=x+3/x-2 Click here to see answer by stanbon(57323)

 Question 135610: I am asked to show how to simplify the following: 3/8x -1/6y - 1/16x + x - 1/3y The answer that I was given is 21/16x - 1/2y. I understand how 21/16x is derived however I do not understand how 1/2y is the answer. Can yo please help? Click here to see answer by baholik06(4)

 Question 136622: HOW DO I BEGIN TO SOLVE THIS PROBLEM? Click here to see answer by solver91311(16877)

 Question 136880: simplify:14/-2 5(-4) 7-(-3) -7(4) x-5=-3 4x=-8 x/2=-8 -2x=6 x/-5=4 Click here to see answer by checkley77(12569)

 Question 140126: Please help me solve this question. I have a full worksheet to complete. If you can help me with this one I can use it as an example to finish the rest. Click here to see answer by ankor@dixie-net.com(15649)

 Question 140134: if x varies directly as y, and x=42 when y = 6, find x when y = 7 Click here to see answer by checkley77(12569)

 Question 140286: I am having trouble with this problem. R varies inversely with S. If R is 40 when S is 2, find S when R is 16. B) How many digits does the smallest repeating block of the decimal expansion of 5/13 have? thankyou for your time. Bill Click here to see answer by ankor@dixie-net.com(15649)