Vanessa has scored 45, 32, and 37 on her three math quizzes. she will take one more quiz and she wants a quiz average of at least 40.
what is the minimum score vanessa needs to earn on her fourth quiz?

Assume cd | ab are parallel. find m2. a) x= 50° (b) x = 70° c) x = 30° d) x = 60

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Icould really use some with this question.