Solve this equation: x+21=20

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

Is trapezoid abdc the result of a dilation of trapezoid mnpq by a scale factor of ? why or why not? yes, because ab and cd are each the lengths mn and qp. yes, because sides ab and cd are parallel to sides mn and qp. no, because ab is the length mn but cd is the length qp. no, because sides ab and cd have different slopes from sides mn and qp.

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?