Determine if the point (4,-3) is a solution to the following system x-y=4 2x+y=5

Carmen begins her next painting on a rectangular canvas that is 82.7 cm long and has a area of 8,137.68 cm2. will the painting fit in a frame with an opening that is 82.7 cm long and 95 cm wide? explain

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?