please help me answer this! for my exam! means alot

please help me answer this! for my exam! means alot

A metal wire, 40 cm long, is cut in two and each piece bent to form a square. If the sum of their areas is 58 cm^2, who long is each piece of wire?

answer must be 2-30

A rectangle has a perimeter of 20m. Let x m be the length of one side. Find a formula for the area A of the rectangle in terms of x. Hence find the maximum area of A

A farmer has 60m of fencing with which to construct three sides of a rectangular yard connected to an existing fence. If the width of the yard is x m and the area inside the yard is A m2, write down...

h=height in feet t=time in seconds if h=96 feet, t=?

4x2 + 28x = 0

A Sheet of cardboard 42cm long and 24cm wide has squares cut out of the corners so it can be folded to form an open box. Find the dimensions of the box if the volume of the box is 468cm^3. Using Quadratics...

I have no idea how to get to the answer, please help! Thank you.

Grade 10 solving problems using quadratic equations.

Here is a link to the picture of the problem. http://imgur.com/0ZiyAzP

the base of a triangular sign exceeds the height by 8 inches. If the area of the sign is 24 square inches, find the length of the base and the height of the triangle.?

A manager has determined that the revenue R(x) (in millions of dollars) made on the sale of supercomputers is given by R(x)= 48x - 3x^2, where x represents the number of supercomputers sold. How many...

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

Look at the two quadratic equations below. y=3x^2-x+7 y=x^2+4x+14 how many times will the graphs of these functions intersect? determine the points of the intersection...

henry jumps from a platform 10 meters above the surface of the water. the height of henry's jump can be modeled by the function h(t) = -5.3t^2 + 4.8t +10, where t is time in seconds after...

maximum and minimum value , find that value

y= maximum vertical distance h= maximum horizontal distance y=-(x-h)2+47 Find the maximum vertical distance and maximum horizontal distance I...

Given y=-(x-5)^2-1 Find each of the following coordinates of vertex is the parabola maximum or min value the maximum or min value write the equation in standard...

Identity the vertex, y-intercept, zeros, axis of symmetry, and intervals of increase & decrease.