The perimeter of rectangle abcd is 42 cm and the area is 80 cm2. which equation can be used to find the dimensions of the rectangle? (hint: set up a system of equations). xy + 2x + 2y = (42)(80) x^2 + 80x - 42 = 0 x^2 - 42x + 80 = 0 x^2 - 21x + 80 = 0

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

The spring the owner of a sporting good store decreases the price of winter gloves from $10 to $8 each increases the price of swimming goggles from $8 to $10 without doing the math you think the percent decrease in the price of the gloves the same as the percent increase of the goggles explain why or why not

Acar loses a quarter of its value every year. it is originally worth $35,000. to the nearest dollar,how much will the car be worth in 8 years?