# Questions on Algebra: Quadratic Equation answered by real tutors!

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## Tutors Answer Your Questions about Quadratic Equations (FREE)

 Question 171202: Graph each number on the complex plane and find its absolute value.. 8. 3 - 4i 9. 8 + 10i 10. 9 + 3i Click here to see answer by stanbon(57962)

 Question 171245: Please HELP! I am stuck on these 4 problems!!! I need to find the factors of the following: 4b^2 - 16 m^2 - 14m + 48 q^3 - q^2 + 2q - 2 t^4 - 81 !!!THANK YOU SO MUCH!!! Click here to see answer by scott8148(6628)

 Question 171221: Solve 4 – 5x > 11 Thanks for any help Click here to see answer by scott8148(6628)

 Question 171247: the question is to state the domain 1 over x+3 Click here to see answer by Mathtut(3670)

 Question 171249: Please help me with this problem. x+a=yb The question says to solve for y and to isolate the variable using- the distributive property? I'm so confused. Click here to see answer by Mathtut(3670)

 Question 171209: Can you PLEASE show me how to graph a quadratic function using its properties? p(x)=-x^2+2x-5 Thank You! Click here to see answer by KnightOwlTutor(293)

 Question 171365: A rectangular garden has a perimeter of 140m and an area of 1200m^2. Set up a quadratic equation and solve it algebraically to find the dimensions of the garden. Click here to see answer by stanbon(57962)

 Question 171379: The height of a golf ball after being hit is approximated by the equation h=18t-4t^2, where h is the height above the ground in meters t seconds after the ball is hit. Algebraically determine the approximate instantaneous rate of change of height of the golf ball when the time is 3.0 seconds, and describe what is happening to the ball at that instant. Click here to see answer by stanbon(57962)

 Question 171381: Algebraically determine the EXACT roots in simplest form for: a) (5/x-3)=(x/x+1) b) 3x-2=(-13/x+4) Click here to see answer by stanbon(57962)

 Question 171377: The power P, in watts, supplied to a circuit by a battery is given by the formula P=6I-0.5I^2, where I is the current in amperes. What is the approximate instantaneous rate of change of power when the current is 4 amperes? Click here to see answer by Alan3354(31518)

 Question 171389: A rectangular swimming pool has length 30 m by 20 m. There is a deck of uniform width surrounding the pool. The area of the pool is the same as the area of the deck. Write a quadratic equation to model this situation and use it to determine the width of the deck. Click here to see answer by midwood_trail(310)

 Question 171444: y + 6(square root of y) = 16 Click here to see answer by ptaylor(2052)

 Question 171384: A rectangular pool measures 10m by 5m. A deck, of uniform width, is to be built all the way around the pool such that the total area of the pool and deck will be 126m^2. Set up and solve a quadratic equation to determine the width of the deck. Click here to see answer by ptaylor(2052)

 Question 171452: Please solve it x^ +7x+12=0 Click here to see answer by nerdybill(7003)

 Question 171453: Please solve it x^2 +7x+12=0 Click here to see answer by nerdybill(7003)

 Question 171206: Can you PLEASE show me how to graph a quadratic function using its properties? f(x)=x^2-4x-5 Click here to see answer by jojo14344(1512)

 Question 171383: A paper airplane follows a parabolic path with h=-1/4t^2+t+3, where h is height in meters, and t is time in seconds. Algebraically determine how long it takes for the paper airplane to hit the ground. Click here to see answer by nerdybill(7003)

 Question 171525: Complete the square. 1. x2 + 60x + 2. x2 – 7x + Solve each equation by completing the square. 3. x2 – 6x – 16 = 4. x2 – 14x + 74 = 0 5. 3x2 + 5x – 28 = 0 6. 4x2 – 6x + 3 = 0 Click here to see answer by solver91311(17077)

 Question 171528: / means square root. [] means absoulte value.. 1.. simpliy -/-169 2..find [-1+i] Click here to see answer by stanbon(57962)

 Question 171582: Can you please show me how to solve this equation using the quadratic formula (x-5)(x+1) = 4 Click here to see answer by Alan3354(31518)

 Question 171583: I need help solving this quadratic equation by factoring: t(3t+1)=2 Click here to see answer by Alan3354(31518)
 Question 171583: I need help solving this quadratic equation by factoring: t(3t+1)=2 Click here to see answer by nerdybill(7003)

 Question 171386: A baseball player hits a ball into the air. The ball's height above the ground, in meters, t seconds after being hit, is approximated by h(t)=1+13t-5t^2. Algebraically determine the time when the ball first reaches a height of 9 m. Click here to see answer by solver91311(17077)

 Question 171580: Can you please show me how to graph this quadratic function using its properties, and based on the graph, determine the domain and range of the quadratic function. f(x) = x^2 - 4x -5 Click here to see answer by jim_thompson5910(28708)

 Question 171579: Can you please show me how to graph each quadratic equation using its properties, and also based on the graph, determine the domain and range of the quadratic function. I am lost when it comes to this new chapter we have started... F(x) = -x^2 + 2x + 8 Click here to see answer by jim_thompson5910(28708)

 Question 171581: Can you please show me how to graph this quadratic function using its properties, and based on the graph, determine the domain and range of the quadratic function. p(x) = -x^2 + 2x - 5 Click here to see answer by jim_thompson5910(28708)

 Question 171610: Why are there usually two solutions in quadratic equations Click here to see answer by KnightOwlTutor(293)

 Question 171564: what is (bcubed+8squared)-(3b-24) Click here to see answer by midwood_trail(310)

 Question 171632: A rope 100 feet long is stretched around four posts set at the corners of a rectangle whose area is 576 square feet. Find the dimensions of the rectangle. Click here to see answer by Alan3354(31518)

 Question 171645: state the domain of the following g(x)=5x/x^2+25 Click here to see answer by stanbon(57962)

 Question 171658: given the equation Kx^2+(k+3)x+3-4k=0 find the value of k given that one root is 2 Click here to see answer by jim_thompson5910(28708)

 Question 171657: you are given the equation A= -3w^2+102w find when area is equal to 360 Click here to see answer by Alan3354(31518)

 Question 171709: Question-In the equation ax^2 + bx + c=0, the value of b^2 -4ac is called the of the quadratic equation. What does the value tell you about the real roots of the equation? Part 2, they don't want the graph. Given the equation,determine how many x intercepts the parabola has. And whether its vertix lies above or below or on the axis. Thanks appreciate all your help. Could not do it without you. Click here to see answer by stanbon(57962)

 Question 171676: in the sequence 1, 6, 15, 28, 45 and so on, the nth term of the sequence is given by a quadratic polynomial, an^2+bn. what is the ordered pair (a,b)? Click here to see answer by Edwin McCravy(8999)

 Question 171631: Find two numbers, one of which is double the other, if the square of their sum exceeds the sum of their squares by 1oo. Click here to see answer by Alan3354(31518)

 Question 171738: 1. A rectangular garden has dimensions of 18 feet by 13 feet. A gravel path of uniform width is to be built around the garden. How wide can the path be if there is enough gravel for 516 square feet? 2. A business invests \$10,000 in a savings account for two years. At the beginning of the second year, an additional \$3500 is invested. At the end of the second year, the account balance is \$15,569.75. What was the annual interest rate? 3. Steve traveled 200 miles at a certain speed. Had he gone 10mph faster, the trip would have taken 1 hour less. Find the speed of his vehicle. Click here to see answer by stanbon(57962)

 Question 171760: I need to find the quadractic equation for 5 and 28 Click here to see answer by Alan3354(31518)

 Question 171807: 3x^2 -x-2 =0 how do I solve this equation using quadratic solution...thank you very much for helping me... Click here to see answer by jim_thompson5910(28708)

 Question 171820: Solve for X 45. 2x^2 + 8x - 3 = 0 Click here to see answer by jim_thompson5910(28708)

 Question 171835: To Graph f(x)> 2x squared - 2x - 1. I really dpnt get how to graph it if you can help that would be fantastic. Click here to see answer by jim_thompson5910(28708)

 Question 171860: how do you simplify the square root of 9/100 ? i dont get that at all please help that would be fantastic. Click here to see answer by jim_thompson5910(28708)
 Question 171860: how do you simplify the square root of 9/100 ? i dont get that at all please help that would be fantastic. Click here to see answer by Alan3354(31518)

 Question 171863: how do you solve the equation by using the square roots: 3x^2-27=0 Click here to see answer by Alan3354(31518)

 Question 171861: how do you solve x^2+2=6 by graphing the related function? Click here to see answer by jim_thompson5910(28708)

 Question 171866: 3z^2+13z+12=0 how do you solve this quadratic equation? Click here to see answer by jim_thompson5910(28708)

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