I'm not good at math, but i really, really need help, what's the exact steps of 2+1(-1-3)?

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.

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.

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is