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 Question 450334: -4x -13x = 85 Okay. Let's combine like terms. -4x minus 13x is -17x. -17x=85. Divide both sides by -17= -5. Click here to see answer by sunsunny3235(5)

 Question 450411: Factor by grouping. xy + 6x + 10y + 60 please show me the steps to get the answer. Thanks Click here to see answer by edjones(7569)

 Question 450403: Factor the polynomial by grouping the terms together two at a time. 55x3 - 25x2 + 44x - 20 Please show me the steps to get the answer. Thanks Click here to see answer by solver15(27)

 Question 450650: The axis of symmetry of a parabola is the line x = 9. What is the x-coordinate of the vertex of the parabola Click here to see answer by oscargut(891)

 Question 450690: The axis of symmetry of a parabola is the line x = 9. What is the x-coordinate of the vertex of the parabola? Click here to see answer by nerdybill(6951)

 Question 450691: The vertex of a parabola is (5, 9). What is the equation of the axis of symmetry of the parabola? Click here to see answer by nerdybill(6951)

 Question 450742: Find all numbers for which the rational expression is undefined: m^3 - 4m -------- m^2 - 81 I do not have any work on this, but I know that the first step is to make the denominator = to 0. then to solve for m. Click here to see answer by ankor@dixie-net.com(15641)

 Question 450922: how to find the quadratic function if only given the y-intercept which is 400 Click here to see answer by stanbon(57262)

 Question 450956: Why Can The Variable X Be Substituded For Two Numbers? Click here to see answer by ilana(307)

 Question 450971: How much of a 5% acid solution and a 20% acid solution must be mixed in order to obtain 3 gallons of a 10% acid solution? Please show me the steps to get the answer. Thanks Click here to see answer by stanbon(57262)

 Question 450973: Find equation of line passing through the point: (5,-2) and (-3,4) Please show me the steps to get the answer. Thanks Click here to see answer by rfer(12654)

 Question 450731: how do you solve this equation for a b and c using the quadratic formula x^2 - 4x -7 = 0 thanks for any help Click here to see answer by richard1234(5390)

 Question 451039: FIND THE STANDARD EQUATION OF ANY PARABOLA THAT HAS VERTEX V. V(4, -2) Click here to see answer by robertb(4012)

 Question 450405: Factor the polynomial by grouping the terms together two at a time. x3 - 6x2 - 4x + 24 Please show me the steps to get the answer. Thanks Click here to see answer by robertb(4012)

 Question 451111: 10x^2= -100x Please tell me how to solve this problem by factoring and doing 2 checks. Thanks. SAL I think the answer is x=0, x= -10. But, how do you do it? Click here to see answer by Gogonati(809)

 Question 451144: Determine the nature of the solutions of the equation 10t^2 - 8t = 0. 2) give exact and approximate solutions to thee decimal places x^2+2x+1=4 3) solve by copleting the square x^2+13/2x=13 4) give exact and approximate solutions to three decimal places (x-5)^2=18 Thank you, Click here to see answer by ewatrrr(10682)

 Question 451301: Hi! I was trying to solve this problem for quadratic equation: but in order to simplify it I get stuck on the part during the equation that looks like this (the + sign in the equation represents the + or - one in the actual equation: . I know that the square root of a negative number is (square root of the number as if it were positive) x i(the square root of - 1). I also know that there will be 2 solutions to this equation. But what do I do after if I need to simplify it as much as possible? Thanks for any help you may give me! Click here to see answer by jim_thompson5910(28510)

 Question 451389: How much of a 5% acid solution and a 20% acid solution must be mixed inorder to obtain 3 gallons of a 10% acid solution? I got the answer 2 gallons of 5% and 1 gallon of 10% but I don't know why. Please show me step by step to get the answer. Thanks Click here to see answer by jorel1380(2518)

 Question 451392: Graph the line 5x+2y=15 I got the answer (0,15/2) and (3,0) but I don't know why. Please show me step by step to get the answer. Thanks Click here to see answer by rwm(914)

 Question 451399: Simplify and leave with positive exponents: (2wy^-3)^4 / 4y^-2 I got the answer 4w^4 / (y^10) but I don't know why. Please show me step by step to get the answer. Thanks Click here to see answer by rwm(914)

 Question 451458: 2x^+5x+2= I was doing fine with equations without the first variable was added - but now that there's a 2x^ I'm a bit stumpted - please help with this one and I can figure the rest of them out Click here to see answer by confusedgirl81(14)

 Question 451609: Use Tickests=-0.2x^2+12x+11 to determin the last day that tickets will be sold. Click here to see answer by nerdybill(6951)

 Question 451608: Using equation Tickets=-0.2x^2+12x+11 describe what happens to ticket sales as the time passes? Click here to see answer by ewatrrr(10682)

 Question 451701: Solve: SQRE ROOT x-5=x-5 I got the answer (5,6) but I don't know how Please show me step by step to get the answer. thanks Click here to see answer by jorel1380(2518)

 Question 451703: Divide: 6x^2y^2-4xy / 2xy I got the answer 3xy-2 but I don't know how Please show me step by step to get the answer. thanks Click here to see answer by jorel1380(2518)