Mr. Tough can grade the final exams in 12 hours. His assistant, Ms. Nice, can grade the same exams in 15 hours. What fraction of the exams can mr tough and ms nice grade in n hours if they work together?

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

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.