Find the value of x that will allow you to prove that CD below is parallel to EF if the measure of <1 is (3x+30) and the measure of <2 is 81 (the figure may not be drawn to scale

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.