Which system of equations has exactly one solution? 2 x - 4 y = 8. x + y = 7. 3 x + y = - 1. 6 x + 2 y = - 2. 3 x + 3 y = 3. - 6 x - 6 y = 3. 3 x - 2 y = 4. - 3 x + 2 y = 4.

A price p (in dollars) and demand x for a product are related by 2x2-12xp+50p2=8200. If the price is increasing at a rate of 2 dollars per month when the price is 10 dollars, find the rate of change of the demand.

The following figure is a 15 sided regular polygon what is the x value shown in the diagram

Solve / x-5/=3 A. x=2, x=8 B. x=-8, x=8 C. x=-2, x=2 D. x=-8, x=-2

What does x equal in 5x+y=-24

An anthropologist finds bone that her instruments measure it as 0.061% of the amount of Carbon-14 the bones would have contained when the person was alive. How long ago did the person die? The half life of carbon 14 is 5,730 years.

In the system shown below, what is the sum of the x-coordinates of all solutions? 3y^2-5x^2=7 3y^2-x^2=23

Choose the equivalent system of linear equations that will produce the same solution as the one given below. 4x - 2y = 6 2x + y = 5 -4x - 2y = 10 -4y = 4 -4x - 5y = - 1 -7y = 5 3x + 2y = 6 7x = 12 4x + 2y = 10 8x = 16

An elf, a dwarf, a hobbit, a wizard, and a man are sitting in a line. How many different ways can they sit if the elf and the dwarf insist on sitting next to each other?

Angie bought 10 paper tablecloths for $0.99 each, 4 packages of paper plates for $2.59 each, 1 case of plastic utensils for $10.99, and 5 packages of napkins for $2.20 each. If the sales tax is 7.25%, how much did Angie spend altogether?

SAmuel is covering a square part of his yard with bricks the square part has a length of 10 feet how many square feet of his yard will Samuel cover with bricks