Select the correct product. (2x + 9)(x + 1) 2x2 + 11x + 9 3x2 + 11x + 9 2x2 - 7x + 9 2x2 + 11x + 10

In the image, point a marks the center of the circle. which two lengths must form a ratio of 1 : 2? (options are in the images since thought they were harmful phrases)

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.

I’m still confused on how to work the percentages