Danielle bought 16 paperback books for $10.95. some cost $0.60 and the rest cost $0.75 each. how many of each did she buy?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.