# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 605904: a food colander is a hemisphere with diameter 20 cm. Find the volume and internal surface area. Click here to see answer by solver91311(16897)

 Question 606015: i have tried many times to solve this but cant find the answer -5g+1=7+2g Click here to see answer by Alan3354(30993)

 Question 606120: How do I solve: r-(-7)= -1-6? I can't remember the steps to solve this. Any help is appreciated. Thank you. Click here to see answer by bucky(2189)

 Question 606296: it tells me to complete the statement. 40x^4 a^2 + 16x^2 a^3 = 8x^2 a^2 ( ) Click here to see answer by stanbon(57361)

 Question 606355: hello trying to help my daughter with solving equations by elimination practice can you show me how to solve this so i can help her with these 3x-2y=-11 3x-3y=-9 and the other one is -3x-y=-10 3x-9y=0 Click here to see answer by scott8148(6628)

 Question 606783: How do you simplifly by factoring this equation? 5x^2 -37x+14? Click here to see answer by richwmiller(9143)

 Question 606867: if a basketball team hi-fives each other and there is a total of 66 hi-fives, how many players on the team? what is the formula to solve this equation? Click here to see answer by scott8148(6628)
 Question 606867: if a basketball team hi-fives each other and there is a total of 66 hi-fives, how many players on the team? what is the formula to solve this equation? Click here to see answer by solver91311(16897)

 Question 606659: Solve square root of 2x+3- square root of x+1=1 Click here to see answer by ankor@dixie-net.com(15656)

 Question 606977: Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.) 3x^2=5x=2 Click here to see answer by Alan3354(30993)

 Question 607207: use rational exponents to write x^1/7 * y^1/2 * z^1/4 as an radical expression. Thanks!!!!! Click here to see answer by jim_thompson5910(28595)

 Question 607312: In printing an article of 48,000 words, a printer decides to use two sizes of type. Using the larger type, a printed page contains 1,800 words. Using smaller type, a page contains 2,400 words. The article is allotted 21 full pages in a magazine. How many pages must be in smaller type? The answer is 17, but how do you get this answer? I don't know what formula to use to solve this Click here to see answer by Nihal@SriLanka(21)

 Question 607499: Is this correct? A^3-1 a-1 I had: (a-1)(a-1)(a-1) a-1 = (a-1)2 Is this right? Thanks! Click here to see answer by nerdybill(6962)

 Question 607498: 3x^3+24 12-3x^2 Have done: 3(x^3-8) 3(4-x^2) Not sure how to continue? Thanks for your help! Click here to see answer by nerdybill(6962)

 Question 607495: (I'm not sure if this is the right section?) 6a^3+6 My answer is 6(a^3+6) =6(a+1)^3 But I'm not sure if this is right? Thankyou! Click here to see answer by Alan3354(30993)

 Question 607497: Is this correct? 4 divide 8 21-9X 14-6X 4 X 2(7-3x) 3(7-3x) 8 = 1/3 ?? Thankyou! Click here to see answer by Alan3354(30993)

 Question 608004: If 2 + 2i is a solution for x2 + mx + n = 0, where m and n are real numbers, what is the value of m? Click here to see answer by lynnlo(4164)

 Question 608098: Greetings mathematic overlords, My conundrum is as follows, I have this equation I am using to calculate a few values: 2x-(x/10)^2=y, from 0 to 100 Now this equation isn’t especially difficult and I get plenty of values out of it, such as when x=36 y=59.04, when x=20 y=26, when x=100 y=100, plotting a nice curve. My issue now is that I need a way to somehow reverse this formula, so that when I know ‘y’ but not ‘x’ I can find ‘x’. I’ve spent a good hour now trying to come up with any tangible way to calculate ‘x’ by only knowing ‘y’ but it is simply beyond my abilities. If it’s not too much trouble would you be able to help me find the formula to find ‘x’ from only ‘y’ so that all answers tie in with the equation 2x-(x/10)^2=y? If possible it would be a great help to me if you were able to explain just how to come to determine such a formula so that I can work it out for myself in the future for similar equations. Thank you for your time. Click here to see answer by scott8148(6628)