Twice the sum of a number and 40 is 84

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.

Solutions for 2x+7 less than or equal to 3x-5

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?