# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 166430: I HAVE TO SOLVE FOR THREE VARIABLES IN THREE DIFFERENT SOLUTIONS. PLEASE HELP. 9x-y+z=-30 3x+2y-3z=-3 x-3y+2z=-12 i thought i knew how to figure it out but i have been at this well over 20 minutes so any suggestions would be greatly appreciated. Click here to see answer by scott8148(6628)

 Question 166460: What number does the t stand for in each of the following equations: a. 100=125-5t squared b. 50=125-5t squared Click here to see answer by jim_thompson5910(28476)

 Question 166459: 7x-2 divided by 10 = 9x divided by 4 + 6 I understand that I must get rid of the fractions first but cannot determine how to do this with the fractions on both sides. If I multipy by 10 on the right side and left side do I then multipy by 4 on both sides. Click here to see answer by ankor@dixie-net.com(15623)

 Question 166546: Hello, I'm stuck on this homework problem. My professor gave us a worksheet and I'm stumped on this one. Instruction: Write an equation for each line. Express it in the standard form Ax + By = C Through (4,2) and (-2,5) Thank you so much, Joan Click here to see answer by stanbon(57216)
 Question 166546: Hello, I'm stuck on this homework problem. My professor gave us a worksheet and I'm stumped on this one. Instruction: Write an equation for each line. Express it in the standard form Ax + By = C Through (4,2) and (-2,5) Thank you so much, Joan Click here to see answer by Mathtut(3670)

 Question 166728: how do you find the answer and what is the answer to... 6x to the second power over y to the second power plus 5x to the second power over y to the second power. it will look somthing like this 6xx/yy+5xx/yy . Click here to see answer by vleith(2825)

 Question 166759: Order of operations. Im a father with a question on this... (8-5x) (3x+2) When x=4 When the numbers inside are found. do you Multiply the two numbers?? giving the answer -168? Click here to see answer by Alan3354(30957)

 Question 166739: could you show me how to solve this problem... 4 and 5 7ths a - 2 and 3 7ths a=? ( 4 5/7a - 2 3/7a ) Click here to see answer by vleith(2825)

 Question 166786: on a business trip,dana traveled to her destination at an average speed of 55 miles per hour.coming home,her average speed was 45mph and the trip took two hours longer.how many hours did she travel alltogether? Click here to see answer by stanbon(57216)

 Question 166785: twice a number,reduced by 3,is equal to 5 times the same number increased by 9. Click here to see answer by honeylolli95(1)

 Question 166850: i dont understand what they are asking me to do, the directions state that i need to solve the formula for the give variable. then it gives me the equation A=2πrh for r, b=2A/h for A, P=2x+2w for x, V=1/3Ar for r. i really dont understand what they want me to do. Click here to see answer by stanbon(57216)

 Question 166854: Four less than two-fifths a number is 24. Find the number Click here to see answer by Mathtut(3670)
 Question 166854: Four less than two-fifths a number is 24. Find the number Click here to see answer by jojo14344(1512)

 Question 166852: Four more than three times a number is 175. Find the number Click here to see answer by jojo14344(1512)

 Question 166815: Dear Tutors, I am a PhD student of literature and languages, and am interested in representing the act of translating a text into one language into another in the form of an algebraic equation. My research is about how when you translate from one language into another, you are not simply replacing one for the other, you are actually getting the sum of the two parts, so it is the two languages making a whole new unit. I feel there is the possibility of representing this in an equation - something along the lines of language x, when translated into language y, is actually a translated text that is the sum of x and y. So the translation z is x+y. Would this be right? I really appreciate any pointers or insights you could give me, as I really don't know anything about algebra, and would bow to your considerable knowledge! :) Warm wishes, Sarah Click here to see answer by MRperkins(300)

 Question 167000: One positive number is 5 times another positive number. The difference between the two numbers is 148. Find the numbers. Click here to see answer by checkley77(12569)

 Question 167056: A rectangle's length is 3 feet less than twice its width. The perimeter is 42 feet. What is the length? Click here to see answer by checkley77(12569)

 Question 167110: If y varies directly as the square of x, and y=7 when x=9, find y when x=7. Click here to see answer by midwood_trail(310)

 Question 167253: One more than twice a number is greater than three Click here to see answer by Edwin McCravy(8879)

 Question 167261: how do I find the answer to 2x + 17 > 42 Thank you so much Click here to see answer by Fombitz(13828)

 Question 167257: Eight times a number is not equal to ten Click here to see answer by Edwin McCravy(8879)

 Question 167274: six less than three times a number is equal to twenty Click here to see answer by Mathtut(3670)

 Question 167272: convert 41° to Celsius by using the formula C=5/9(F-32) Click here to see answer by checkley77(12569)

 Question 167278: six is less than three times a number Click here to see answer by NerdvanaGirl(8)

 Question 167284: One sixth of a number is less than two Click here to see answer by miniiez(1)

 Question 167289: Sue is five years younger than Jim. She is twelve Click here to see answer by Mathtut(3670)
 Question 167289: Sue is five years younger than Jim. She is twelve Click here to see answer by checkley77(12569)

 Question 167286: One sixth of a number is less than two Click here to see answer by Mathtut(3670)
 Question 167286: One sixth of a number is less than two Click here to see answer by checkley77(12569)

 Question 167279: One fourth the cost of a pizza pie is less than \$2.00 Click here to see answer by Mathtut(3670)

 Question 167256: HI, It's been decades since I last worked in serious algebra but have hit a mathematical problem that I cannot solve. Your help would be tremendously appreciated. Starting Amount = 3,000,000 (- variable c) Ending Amount = 0 Number of Years to withdrawl amounts = 10 (- variable y) Withdrawl Amounts increase annually by 3% [inflation rate] (- variable f) Each years remaining amount (- variable r) increases by 3.75% [interest rate] (- variable i) = interest (- variable z) Each annual withdrawal amount so far is unknown. (- variable x) Solve for the initial [first year] withdrawal amount (x). Provide a formula to calculate the first x with theb given values above. Known Formulas I have figured out that do work with these values: Note c = 0.00 in year A sample table with accurate figures doing the same mathematical calculations as needed above but for 3 years instead of 10 is shown below. For this data, all other constants from above remain unchanged. y____Funds (c)___Withdrawal(x)__Balance (r)____interest(z) 1__3,000,000.00__1,007,263.88__1,992,736.12__74,727.60 2__2,067,463.72__1,037,482.80__1,029,981.93__38,624.32 3__1,068,606.25__1,068,606.25_____0.00)_______(0.00) 4_____(0.00) As you can see, I have the figures. What I need is the formula so that I can do this in excel. Again, many thanks for your help if your able. Rick Click here to see answer by oscargut(891)

 Question 167255: Eight times a number is not equal to ten Click here to see answer by midwood_trail(310)

 Question 167302: One third of the price is less than \$20 Click here to see answer by midwood_trail(310)