What is the determinant of the coefficient matrix of the system
-x-y+2z=5

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Ascatter plot with a trend line is shown below. which equation best represents the given data? y = x + 2 y = x + 5 y = 2x + 5