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

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

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

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 2,500...

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...

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...

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 h(t)=−16t^2+78t+10...

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?

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...

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

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...

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

In a shot put even, Jenna tosses her last shot from a position of about 6 feet above the ground with an initial vertical and horizontal velocity of 20 ft./s the height of the shot is modeled by the...

x^2-3x-5=0

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....

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...

The answer I got from trying this was x=0.926649916142 I just wanted to double check this problem I really appreciate the help.

A rectangular shipping crate is in the form of a cube. The width is decreased by 2 m while the length is increased by 2m and the height is increased by 3 m. The new crate has a volume of 168...

x^2+50=0 and ...

The height, y metres, of an object projected directly upwards from the grouncl can be modelled by y = 17t-5t^2, where t is the time in seconds after it leaves the ground. (iii)...

Steps to take: 1. Draw diagrams 2. Decide what X will stand for 3. Write an equation that uses the variable and the info they give you 4. Set the equation equal to zero 5. Factor 6...

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