-2x-4y=12
2x+4y=-12
Sove each system by elimination

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor