Questions on Algebra: Quadratic Equation answered by real tutors!

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 Quadratics: solvers Practice! Answers archive Lessons Word Problems In Depth

 Question 304654: would you do these problems and show all work: solve each equation by graphing the related function. If the equation has no solution, write no soultion. 1)x2=16 Click here to see answer by richwmiller(9143)

 Question 304665: the promblem is very confusing The average annual undergraduated tution and fee charges C, in dollars for a certain 4 yr college for academic years 2000-2001 through 2005-2006 can be estmiated by the equation C=29.7x^2 +314.4x +3467.1, where x is the number of years after the 2000-2001 scademic year. assuming the model will remain valid beyond 2005-2006, in which academic YEAR will tution and fee charges be 8000? Click here to see answer by stanbon(57387)

 Question 304686: find the real solutions, using the quadratic equation 3x(x+2)=5 Click here to see answer by vleith(2825)

 Question 304685: use the quadratic formula to find the real solutions x^2+2x-13=0 x= Click here to see answer by checkley77(12569)

 Question 304624: find the real solutions, using the quadratic equation 3x(x+2)=1 Click here to see answer by ankor@dixie-net.com(15660)

 Question 304763: find the equation of the line containing the give pair of points (-7, -4) and (-5, -1) Click here to see answer by Alan3354(30993)

 Question 304739: Sir, i have a query about the representation of a quadratic equation of the form y^2=4ax, to be represented as parabola with the origin at (0,0).Well, the actual equation was S=ut+(1/2)a(t^2), one of the equations of motion. I have tried solving it, but i cannot enclose a diagram here. I know how to derive the formula y^2=4ax mathematically, but i need help on how to derive it from the equation of motion stated above. THANK YOU, AND PLEASE HELP.. I NEED THIS BY MONDAY, 17/05/2010. Click here to see answer by Alan3354(30993)

 Question 304437: write the expression 13m^8 -3m^4 +4 in quadratic form if possible thankyou Click here to see answer by scott8148(6628)

 Question 304438: solve b^4 + 2b^2 -24 =0 thank you Click here to see answer by scott8148(6628)

 Question 304994: Solve for x:  x^2 + 7x + 4 = 0 Click here to see answer by stanbon(57387)

 Question 305090: Two young boys, Bob and Tom, are mowing grass one summer as a means of making money to save for their college education. They always split the work and proceeds equally. They have one lawnmower. They obtain a new job which involves mowing a 40' by 80' rectangular vacant lot. The owner wants it mowed in a collapsing pattern (begin mowing around the outside perimeter, with each pass moving closer to the center of the lot). Bob will mow first, turning the work over to Tom when he has mowed exactly half the area. Bob decides that he will stop at a uniform distance in from the perimeter on all sides, leaving a remaining rectangle for Tom to complete. At what uniform distance (in feet to 2 decimal places) should Bob stop mowing? Solve by creating and solving a quadratic equation. How do you solve this problem I do not understand? Click here to see answer by ankor@dixie-net.com(15660)

 Question 305106: given 3 consecutive positive integers, it turns out that the difference between the square of the largest number and the square of the smallest number is 12 less than the square of the middle number. what is the sum of the 3 numbers? Click here to see answer by dabanfield(803)

 Question 305086: It says: Solve by completing the square equation: m^2-25/2x=5/2 the 25/2 is a fraction and the "x" is on the side, and the 5/2 is a fraction as well. This is what I've tried so far: I moved the "5/2" to the other side of the equal sign to where it looks like this: m^2-25/2x-5/2=0 then I've tried to figure out how to square it Click here to see answer by dabanfield(803)

 Question 305149: (x-5)^2=121 Click here to see answer by checkley77(12569)

 Question 305158: -3x+ Click here to see answer by richwmiller(9143)

 Question 305157: -3x+4 Click here to see answer by richwmiller(9143)

 Question 305153: find the dscriminant of the quadratic equation and give the number and type of solutions of the equation. s^2+7s+11=0 Click here to see answer by isharkk(3)

 Question 305172: solve the equation in the complex number system 117x^2+1=18x Click here to see answer by Alan3354(30993)

 Question 305225: You are trying to throw a ball over w wire that is 40 feet above ground. The height of the ball is modeled by the equation h= -16t^2+40t+6.Will you be able to throw over the ball? I got no you won't, but I'm confused on if I did it correctly or not. My teacher wants us to solve using the quadratic formula or factoring, but how do you do that when the equation is already given? Click here to see answer by scott8148(6628)

 Question 305258: x^2 + x^2= (x+2)^2 Click here to see answer by Alan3354(30993)

 Question 305229: :49 It says: Solve by completing the square equation: m^2-25/2m=5/2 the 25/2 is a fraction and the "x" is on the side, and the 5/2 is a fraction as well. This is what I've tried so far: I moved the "5/2" to the other side of the equal sign to where it looks like this: m^2-25/2x-5/2=0 then I've tried to figure out how to square it Click here to see answer by scott8148(6628)

 Question 305315: Solve each equation by graphing. Click here to see answer by richwmiller(9143)

 Question 305284: Word problem: The number of tickets sold each day for an upcoming performing of Handel's Messiah is given by N(x)=-0.4x^2+8.8x+13, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day? Ticket sales will peak _____ days after the concert was first announced. The number of tickets sold on that day will be ______. (round to the nearest integer). I don't understand what they want me to do or the formula to fill out this problem. Click here to see answer by Theo(3464)

 Question 305290: don't understand how to solve for x: (x-b)2 = 4b2 book says 3b, -b don't know how to get to that answer Click here to see answer by Fombitz(13828)

 Question 305291: Which one of the following is not equivalent to the others? a. (root:3:(x))^(4) b. root:4:(x^(3)) c. root:3:(x^(4)) d. x^(4/3) e. (x^(1/3))^(4) Click here to see answer by Fombitz(13828)

 Question 305454: solve this following quadratic equations by factorisation: a)x²+7x+12=0 24 b)6x²-5x+1=0 Please help im stuck on these, Thanks Click here to see answer by london maths tutor(243)
 Question 305454: solve this following quadratic equations by factorisation: a)x²+7x+12=0 24 b)6x²-5x+1=0 Please help im stuck on these, Thanks Click here to see answer by computerboy2010(2)

 Question 305374: find two consecutive intergers such that the square of the smaller plus twice the larger is 50 Click here to see answer by Fombitz(13828)

 Question 305520: What do you do if you cant solve a problem? Click here to see answer by Fombitz(13828)
 Question 305520: What do you do if you cant solve a problem? Click here to see answer by graphmatics(170)
 Question 305520: What do you do if you cant solve a problem? Click here to see answer by JBarnum(2044)

 Question 305588: If f(x)= x^2-3 and g(x)=2x+1, calculate the values: a) (f.g( (-2) b) (g.f) (3) Please calcuate step by step Click here to see answer by solver91311(16897)

 Question 305630: okk... it says, use the quadriatic formula to solve the equation. Round your solutions to the nearest hundreth.... and the problem is x squared + 10x +1 =0 Click here to see answer by solver91311(16897)

 Question 305670: 8xsquared=60 Click here to see answer by Alan3354(30993)

 Question 305740: Hello, once again I'm not understanding this question. Please help A professional stunt performer at a theme park dives off a tower, which is 21m high, into water below. The performer's height, "h", in meters, above the water at "t" seconds after starting the jump is given by h=-4.9t^2+21. a)How long does the performer take to reach the halfway point? b)How long does the performer take to reach the water? Thank you Click here to see answer by richwmiller(9143)

 Question 305755: If you are looking at a graph of a quadratic equation who do you detemine where the? solutions are Click here to see answer by richwmiller(9143)

 Question 305730: step by step help with quadratic formula problem 6x^2-2x+2=0 Thank you in advance Click here to see answer by checkley77(12569)

 Question 305729: step by step help with quadratic formula problem 6x^2-2x+2=0 Thank you in advance Click here to see answer by checkley77(12569)

 Question 305737: Please help me to solve this word problem. We have just started this new section and I just can't solve it. Water from a fire hose is sprayed on a fire that is coming from a window. The window is 15m up the side of a wall. The equation H=-0.011x^2+.99x +1.6 models the height of the jet of water, H, and the horizontal distance it can travel form the nozzle, x, both in meters. What is the maximum height that the water can reach? and how far back could a firefighter stand, but still have the water reach the window? Click here to see answer by nerdybill(6962)
 Question 305737: Please help me to solve this word problem. We have just started this new section and I just can't solve it. Water from a fire hose is sprayed on a fire that is coming from a window. The window is 15m up the side of a wall. The equation H=-0.011x^2+.99x +1.6 models the height of the jet of water, H, and the horizontal distance it can travel form the nozzle, x, both in meters. What is the maximum height that the water can reach? and how far back could a firefighter stand, but still have the water reach the window? Click here to see answer by richwmiller(9143)

 Question 305947: how can i solve: sqrt32/sqrt25 Click here to see answer by checkley77(12569)

 Question 305971: the melting point of subtance x is -20 degrees celsius and the boiling point is 90degrees celsius. how many celsius degrees are there between the melting point nd the boiling point? Click here to see answer by themathtutor2009(81)

 Question 305977: Solve: 15x^4-28x^2+5=0 Click here to see answer by Alan3354(30993)

 Question 305982: xsquared-8x=33 Click here to see answer by JBarnum(2044)

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