352 Answered Questions for the topic Quadratic Formula

07/13/17

How to solve this quadratic equation with the quadratic formula?
I've been having trouble with this problem:   x2 + 2x = 8   So far this is what I got:   -2±√-28-----------      2   However I'm not too sure what to do next, help?
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07/13/17

One, Two, or No Real Solution Problem.
How do I know if this has One, Two, or No Real Solution?   -3x^2 + 5x - 1 = 0    
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Quadratic Formula Math Algebra 1 Area Of Rectangle

06/28/17

If the area of a rectangle is 5l3 + 5l2w - 2lw - 2w2, find its length and width. A = lw
Please explain your reasoning. 
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Quadratic Formula

05/08/17

Use the technique of completing the square to transform the quadratic equation into the form (x + c)^2 = a.
Question1. 6x^2 – 36x + 42 = 0 Question2. 3x^2 – 48x + 153 = 0
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04/29/17

Quadratic equation related doubt
How to get the formula s=1/2(αβ/α+β)t2 
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Quadratic Formula

03/24/17

how do i solve with quadratic formula?
what is the exact process of the Quadratic Formula?
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Quadratic Formula

03/15/17

suppose that the equation v=5.5x^2-440x+17500 represents the value of a car from 1970 to 2017. What year did the car have the least value? (x=0 in 1970)
suppose that the equation v=5.5x^2-440x+17500 represents the value of a car from 1970 to 2017. What year did the car have the least value? (x=0 in 1970)
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Quadratic Formula

03/07/17

Find the dimensions of the fielld
The area of the field is 800 yd.² The length of the field is twice the width  
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Quadratic Formula

03/07/17

9w^2 – 7 = 0
The answer must be in decimal in hundreths  
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Quadratic Formula Find The Answer

02/15/17

A number is 30 less than its square .
A number is 30 less than its square.find the numbers
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Quadratic Formula Mathematics

01/23/17

Can you use the quadratic formula to solve any quadratic equations?
Can you use the quadratic formula to solve any quadratic equations?
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Quadratic Formula

12/09/16

Julie wants to build a sidewalk of uniform width around her garden.
Julie wants to build a sidewalk of uniform width around her garden. Her garden is rectangular, and its dimensions are 20 feet by 30 feet. She has enough pavers to cover 900 square feet and wants to... more
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Quadratic Formula

12/07/16

quadratic formula
i bought a truckload of wreaths for 750$ and priced them so I would make a 2$ profit on each one sold. When i sell all but 100 wreaths, i break even. how many wreaths were in the truckload?
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Quadratic Formula 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 Formula 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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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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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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11/16/16

What is this formula for in the mathematic point of view?
I have derived a formula and I wonder what formula is similar to this one in a mathematical point of view?   F = (X2 - Y2)/ (X - Y )2   Is there any formula that looks like this one and is used... more
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Quadratic Formula Solving Equations

11/07/16

When will the object hit the ground after it is launched? Explain how you found your answer
An object is launched from the ground. The object’s height, in feet, can be described by the quadratic function h(t) = 80t – 16t2, where t is the time, in seconds, since the object was launched.
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Quadratic Formula

11/04/16

Solve the equation x = 2 × 1 x + 1
Find a number that is exactly 1 more than 2 times its reciprocal. That is, solve the equation x = 2 × 1 x + 1.
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Quadratic Formula

10/23/16

use quadratic formula to solve
x^2-3x-5=0
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Quadratic Formula

10/17/16

solving by the quadratic formula
In Algebra 1 I am given the following problem:   Solve by the quadratic formula: 5x - 1 = 2x2 Please help me.
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Quadratic Formula Word Problem Quadratic Equations

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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10/12/16

quadratic function (word problem)
A ball is thrown up in the air from the ground and follow the function h(t) = 50t - 4.90t2 where t is time in seconds. what is the total time the ball stays in the air.   I need help in answering... more
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Quadratic Formula

10/08/16

I need help solving equation by use of quadratic formula 5a^2+4a=8
The answer I got from trying this was x=0.926649916142   I just wanted to double check this problem I really appreciate the help. 
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