Not sure how to write out the proof, please help if you can.

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.

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle