Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 311914: How would you factor:
5x^2-15x-60
Click here to see answer by Alan3354(69443)

Question 311914: How would you factor:
5x^2-15x-60
Click here to see answer by stanbon(75887)

Question 311907: Write a quadratic equation having the given numbers as solutions.
-7, 4
Click here to see answer by unlockmath(1688)

Question 311925: Word Problem. Solve the problem.
Two pipes can fill a large tank in 10 hours. One of the pipes, used alone, takes 15 hours longer than the other to fill the tank. How long would each pipe take to fill the tank alone? Show your work.
Click here to see answer by stanbon(75887)

Question 311949: distance traveled by an object moving in a straight line is given by s = t^2 + 8t, where s is in ft. and t is the time in seconds has been in motion. How long (to the nearest tenth) will it take the object to move 9 ft. Please show your work, i am having a really hard time getting this!
Click here to see answer by josmiceli(19441)

Question 311964: Please help!. write a quadratic equation having the given numbers as solutions.2/3, 9/5
Click here to see answer by nerdybill(7384)

Question 311963: How do you solve this question?:
The sum of two positive integers is 25. The differnece of their squares is 275. Find the intergers.
All i really need for this prolem is the equation using the quadraic equation.
Sort of set up like this
ex: x^2+2x=48
Something like that....

PLEASE HELP ME I AM DESPERATE!
Click here to see answer by mananth(16946)

Question 311967: Use the discriminant to determine whether the following equations have solutions that are : 2 diff. rational solutions,2 diff. irrational solutions, exactly 1 rational solution, or 2 different imaginary solutions.
3 + 8z^2 = -7z
I am so confused, I just am not catching on to the quadratic equations
Click here to see answer by Fombitz(32388)

Question 312152: Once principle used by the ancient Greeks to get shapes that are pleasing to the eye in art and architecture was the Golden Rectangle. If a square is removed from one end of the Golden Rectangle, the sides of the remaining rectangle are proportional to the original rectangle. So the lenght and width of the original rectangle satisfy L/W = W/L-W. If the length of a Golden Rectangle is 10 meters, then what is its width? Also, an artist wants her painting to be in the shape of a golden rectangle. If the length of the painting is 36 inches, then what should be the width?
Click here to see answer by nerdybill(7384)

Question 312156: how do you solve them with fractions?? like the examples that u guys have but with fractions!

Click here to see answer by Fombitz(32388)

Question 312175: can someone help me with problem by doing step by step!!
2
-1/3x+x+4=0 the 1st value is one third not 1 divide by 3! ok!

Click here to see answer by JBarnum(2146)

Question 312214: Find the x- and y- intercepts.
f(x) = -x^2 + 11x - 30
Click here to see answer by nyc_function(2741)

Question 312216: Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function.
f(x) = -x2 + 2x - 2

Click here to see answer by nyc_function(2741)

Question 312215: Write a quadratic equation having the given numbers as solutions.
-3.5, 2.2
Click here to see answer by solver91311(24713)

Question 312144: Thomas is going to make an open-top box by cutting equal squares from the four corners of an 11 inch by 14 inch sheet of cardboard and folding up the sides. If the area of the base is to be 80 square inches, then what size square should be cut from each corner?
Click here to see answer by checkley77(12844)

Question 312299: what are the steps to get the solution to this quadratic equation(Can you explain it to me?):
x^2 + 4x +3 =0
Click here to see answer by scott8148(6628)

Question 312327: Use the quadratic formula to solve the equation -0.2x^2+14x+11=0
Click here to see answer by solver91311(24713)

Question 311943: x^2 - 8x + 16 = 36
Click here to see answer by scott8148(6628)

Question 312441: SOLVE X(X+1)=27
Click here to see answer by Fombitz(32388)

Question 312441: SOLVE X(X+1)=27
Click here to see answer by solver91311(24713)

Question 312470: How do you solve the quadratic equation 3x^2-7x+2=0 using formula?
I have worked it out the overall square root to -73 however when i type this is my calculator says maths error?
Thanks For Your Help
Click here to see answer by solver91311(24713)

Question 312491: Use the quadratic formula to determine the x intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting point to graph the function. Show work. fx(x)=1/2x^2
Click here to see answer by Fombitz(32388)

Question 312499: You will need to use the formula 4.9t2 + v0t = s, where t is the time in seconds, v0 is the initial velocity, and s is the distance in meters.
Approximately how far will an object fall in 13 seconds (t) when thrown downward at an initial velocity of 10 meters per second (v0) from a plane?
Click here to see answer by nerdybill(7384)

Question 312501: Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x.
f(x) = x2 + 2
Click here to see answer by rapaljer(4671)

Question 312503: what quadratic function can represent the solutions of the roots -4 and 5/3?
Click here to see answer by nerdybill(7384)

Question 312503: what quadratic function can represent the solutions of the roots -4 and 5/3?
Click here to see answer by Fombitz(32388)

Question 312495: Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.
x^2 + 18x + 58 = 0
Click here to see answer by CharlesG2(834)

Question 312513: so if I have a slope problem and the slope is already graphed on the paper how do i solve the problem
Click here to see answer by Fombitz(32388)

Question 312541: Without graphing, find the vertex.
f(x)= 6(x-4)^2 - 9
I think it's (-4,-9)
Click here to see answer by solver91311(24713)

Question 312530:
Click here to see answer by Fombitz(32388)

Question 312543: Without graphing, find the maximum value.
f(x) = -10/3(x + 5)^2 - 5
Click here to see answer by Fombitz(32388)

Question 312543: Without graphing, find the maximum value.
f(x) = -10/3(x + 5)^2 - 5
Click here to see answer by solver91311(24713)

Question 312542: Without graphing, find the line of symmetry.
f(x)= -13/17(x + 2)^2 - 5
Click here to see answer by solver91311(24713)

Question 312525: Lee can frame a cabin in 4 days less than Ron. When they work together, they will do the job in 4 days. How long would each of them take to frame the cabin alone?
Click here to see answer by nerdybill(7384)

Question 312635: Using the equation how do you find the values of a and k when h=1, and you have the coordinates (2,7) and (-1,16)
At first I tried to find the slope using the coordinates, but I thought that would not work because it's not a line, but I got 10 for a, which was wrong anyway.
Click here to see answer by scott8148(6628)

Question 312735: Joe has dimes and nickels that total $5.65. If Joe doubles his dimes and adds 20 nickels, his total is $10.15. How many dimes does Joe have?
Click here to see answer by ankor@dixie-net.com(22740)

Question 312839: How do I evaluate this equation?
-3/5[2/3 - 1/2(3/4 - 1/2)]=
Thanks
Click here to see answer by rfer(16322)

Question 312952: Without graphing, find the line of symmetry.
f(x) = (x + 1)2 - 1
Click here to see answer by Fombitz(32388)

Question 312954: Find the x- and y-intercepts. If no x-intercepts exist, state so.
f(x) = 2x2 - 2x - 24
Click here to see answer by checkley77(12844)

Question 312966: Solve by applying the Quadratic formula; all radicals should be simplified as far as possible. Show your work.
12d^2 + 29d + 15 = 0
Click here to see answer by solver91311(24713)

Question 312950: Without graphing, find the vertex.
f(x) = 6(x - 4)2 - 9
Click here to see answer by Fombitz(32388)

Question 312950: Without graphing, find the vertex.
f(x) = 6(x - 4)2 - 9
Click here to see answer by nyc_function(2741)

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