# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 159014: (W+2)/(2W-2)=5 can you help solve for W in the steps so I can learn? Click here to see answer by midwood_trail(310)

 Question 159020: In November the number of snow-tire changes was 6 less than 4 times the numver of tune-uos. if 12 tune-ups were done, how many snow-tire changes were made? Click here to see answer by oscargut(891)

 Question 159028: carol ordered 120 air filters for the garage. The number of air filters was 8 less than 2 times the number of gas filters ordered. How many gas filters were ordered? Click here to see answer by gonzo(654)

 Question 159054: Write the equation of the line that passes through the point (2,-4) and is perpendicular to the line whose equation is y= -1/2x + 3 Please HELP!! Click here to see answer by scott8148(6628)

 Question 159059: The center of a circular sunflower with a diameter of 4 centimeters is (-2,1). Write the equation that represents the sunflower. Please help & Thanks! Click here to see answer by scott8148(6628)

 Question 159052: What values of x would make the following equation undefined? 1/x + 1/x+3 =2 Any help is appreciated! Click here to see answer by KnightOwlTutor(293)

 Question 159025: Carol's Garage had a special last month. For each pair of tires you bought, you got a free oil change. During the special, 48 tires were sold. How many free oil changes were done? Click here to see answer by KnightOwlTutor(293)

 Question 159021: Carol ordered 119 oil filters for the garage. The number of oil filters was 5 more than 3 times the number of tires ordered. How many tires were ordered? Click here to see answer by KnightOwlTutor(293)

 Question 159055: Solve the following system of equations algebraically: y = x^2-6x+6 y-x= -4 Click here to see answer by Fombitz(13828)

 Question 159092: tn= 2x+(n-1)5x can you please formulate this for me. step by step on how to solve this problem? Click here to see answer by vleith(2825)

 Question 159009: Can you help me with this? A= h (B+b);B _ 2 Click here to see answer by midwood_trail(310)

 Question 159002: Can you help me solve this equation? A= h )B+b);B _ 2 Your help will be appreciated. Thank you! Click here to see answer by Fombitz(13828)

 Question 159191: The difference of tow integers is 8. Six times the smaller number is 4 more than 2 times the larger. What are the numbers? Click here to see answer by stanbon(57356)

 Question 159256: How do you solve: n^2 - 10n = -21 ? Click here to see answer by Alan3354(30993)

 Question 159260: I have a substitution problem that I would like help with, please (I have a test tomorrow). x + y + z = 3 3x + 3y + 3z = 10 x - 3y + 4z = 6 I know that I could start by solving for x in the third equation: x = 3y - 4z +6 I can also solve for y in the first equation: y = 3 - x - z I could then substitute y in the second and third equation: x + 3 - x - z + z = 3 but this makes all variables 0 x - 3(3 - x - z) + 4z = 6 x - 9 + 3x + 3z + 4z = 3 4x + 7z = 12 Now I'm stuck. Thank you! Click here to see answer by Alan3354(30993)

 Question 159367: I am a homeschooler and am having trouble with a problem. My teachers manual has the solutions but not the steps used to arrive at the solutions. Normally I am able to show my son the steps, but this equation has me stumped. A detailed explanation would be greatly appreciated, as I can't figure out where I am making my mistake (or mistakes). The equation: x = y / y+4 solve for y The solution: y = 4x / 1-x Click here to see answer by jojo14344(1512)

 Question 159365: Hi! I have a question. I am done with all my homework but i am stuck on one question. Do you know what exponential form of 10 is?? Click here to see answer by Earlsdon(6287)

 Question 159472: The worker on machine A can complete a certain job in 6 hours. The worker on machine B can do the same job in 4 hours. In a rush situation, how long would it take both machinists to complete the job? Click here to see answer by josmiceli(9680)

 Question 159478: To generate hydrogen in a chemical lab, a 40% solution of Sulphuric acid is needed. You have 50ml of an 86% solution of sulphuric acid. How many ml of water should be added to dilute the solution to the required 40% sulphuric acid? Click here to see answer by josmiceli(9680)

 Question 159481: How many kilograms of nicker silver containing 18% zinc and how many kilograms of nickel silver containing 31% zinc must be melted together to produce 700kg of a new nickle silver containing 22% zinc??? Click here to see answer by josmiceli(9680)

 Question 159483: The worker on machine A can complete a certain job in 6 hours. The worker on machine B can do the same job in 4 hours. In a rush situation, how long would it take both machines to complete the job??? Click here to see answer by Alan3354(30993)

 Question 159525: -6+x/4=-5 This is a fraction equation with negative. I am trying to help and have forgetten how to do these. Thank you so much for your help. Robin Click here to see answer by jim_thompson5910(28595)

 Question 159468: A discount store sells personal computers for \$920.00. This price is 80% of the price at the wholesale store. What is the wholesale price? How much will you save at the discount store? Click here to see answer by mizjoice(22)

 Question 159477: Sally invested \$4500.00. Part of it was invested at 7.5% and part of it was 6%. After one year her interest was \$303.00. How much was invested at each rate? Click here to see answer by checkley77(12569)