3. Find one counterexample to show that the conjecture is false: "Z1 and 22 are supplementary, so one of the angles is acute."
O
m21=39º and m2=146
O
m_1=109° and m2=71
m1=90° and mZ2=90
h
O
m1=31° and m2=59

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.