Slope of line that passes through points (2,1) and (17,-17)

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.