696 Answered Questions for the topic Quadratic Equations

Quadratic Equations

01/19/17

if -4 is the root of a quadratic equation x2+px-4=0 and the quadratic equation x2+px+k=0 has equal roots, find the value of k
if -4 is the root of a quadratic equation x2+px-4=0 and the quadratic equation x2+px+k=0 has equal roots, find the value of k
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Quadratic Equations

01/19/17

Find the value for k for which the quadratic equation x2+5x+k=0 has no equal roots
well i need help regarding this question.   Find the value of k for which the quadratic equation x2+5x+k=0 has no eual roots. please help. i m stuck at this for countless minutes.
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Quadratic Equations Real Solutions

01/09/17

real solutions
Determine if each quadratic equation has real solutions. Choose Yes or No. A. 12x^2-5=-3 B 2/3 x^2+7=11 (the x is not in the fraction, it is after)C 2(x^2-3)=3(2x^2+1) D 3x^2-1=8x^2+9 E... more
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Quadratic Equations

12/26/16

find all values of h 9x^2-3x+3h=0
h=   ? 
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Quadratic Equations

12/22/16

need help finding all values of j in quadratic 7x^2+4x+j=0. How do I know if <,> or =
with parameter
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Quadratic Equations Math Word Problem Word Problems

12/05/16

How long does he have until the ball reaches the ground?
Draco steals and throws Neville's red ball straight up at 78 feet per second from about 10 feet above the ground. The ball's height in feet above the ground after t seconds is given by... more
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Quadratic Equations

12/05/16

(x)/(x+3)+(2x)/(x-3)-(45)/(4(x^(2 )-9))=0
solve the quadratic equation. if it has no real root, state so. the answer is 1.5 or -2.5, but i dont know the method
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Quadratic Equations

11/30/16

Find an equation that has the solutions:
t=3/5 , t=5 , t=-5
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Quadratic Equations Math Algebra Word Problem

11/29/16

What are the lengths of the sides of the mirror and the painting?
A square mirror has sides measuring 2 feet less than the sides of a square painting. If the difference between their areas is 32 square feet, find the lengths of the sides of the mirror and painting.  more
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Quadratic Equations

11/28/16

Find the equation of a parabola, that passes through 1,20 and has x-ints 3,0 and -9,0
it is out of 6 marks  you have to show your steps and have a final statement  I dont understand how to do this question
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Quadratic Equations Math Word Problem Quadratic Formula

11/28/16

What are its dimensions?
Someone installs 96 feet of electric fencing around a rectangular headquarters. If the headquarters covers 540 square feet, what are its dimensions? 
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Quadratic Equations

11/28/16

An object is thrown downward with an initial velocity of 7 feet per second. The relationship between the distance s it travels and time t is given by
s= 7t+16t^2 How long does it take the object to fall 78 feet?
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Quadratic Equations

11/26/16

A pet shop bought a litter of puppies for 8000. All but 3 of them were sold, at a profit of 600 each for a total of 8000. How many puppies were in the litter?
how many puppies were in the litter?      
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11/20/16

Quadratic Word problem
A toy rocket is launched form a 3m platform, at 8.2m/s. The height of the rocket is modelled by the equation h=-4.0t^2+8.1t+3 where h is the height, in metres, above the ground and t is the time,... more
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11/13/16

Roots of a polynomial
The number of integer x such that x2x-3(2x+2)+25 =0   Please help with this roots question
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Quadratic Equations

11/13/16

how do u solve this quation?
what's the value of n to make perfect square?   x^2+11x+n
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Quadratic Equations

11/10/16

Quadratic Equations resulting in NOT real numbers
If The Solutions To A Quadratic Equation Are Not Real Numbers Then What Does That Say About The X Intercepts On The Graph Of The Function F
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Quadratic Equations

11/06/16

Quadratic Equation
Suppose the valley following the lift hill is in a shape of a parabola that has a maximum drop of 14m and the start and end points are 20m apart. Write a quadratic equation that models the profile... more
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Quadratic Equations

10/30/16

Each side of a square is 4 square meters long. When each side is increased by X meters, the area is doubled. Find the value of X.
Setup using a quadratic equation, then solve the problem
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10/30/16

-10x+100x+6000
A hall charges $30 per person for a sports banquet when 200 people attend. For every 10 extra people that attend, the hall will decrease the price by $1 per person. What number of people will... more
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Quadratic Equations Word Problem Functions Word Problems

10/27/16

Find the maximum height of a model rocket launch algebraically.
A model rocket is launched with an initial velocity of 120 ft/sec from a height of 80ft. The height of the rocket t seconds after it has been launched is given by the function s(t)=-16t^2 +120t +... more
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Quadratic Equations

10/25/16

Solve. Make sure you label your variables, write an equation and solve.
The hypotenuse of a right triangle is 1 inch longer than the longer leg. The shorter leg measures 7 inches less that the longer leg. Find the measure of the longer leg of the triangle.   Solve... more
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Quadratic Equations

10/23/16

quadratric equations
which quadratic equation in standard form has coefficients of: a=5, b=-4, c=1?   5x^2-4x+1=0 5x^2-4x=0 5x^2+1=0 none of these  
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Quadratic Equations Parabola

10/17/16

Height equation problems
A baseball is hit so that its height can be modeled by the equation h(t)-=-4.9t^2+115t+6 where h(t) represents the height in meters of the baseball t seconds after the ball is hit. a.) what is... more
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Quadratic Equations Word Problem Quadratic Formula

10/16/16

Newspaper profit
A newspaper's profit is $20 per year for each of its 2,500 subscribers. Management estimates that the profit per subscriber will increase by 1¢ for each additional subscriber over the current... more
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