Round to the nearest tenth 18 is what percentage of 79

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

Solve the formula ax+ by = c for x.