In the function f(x)=20x^2-5 which is not a factor a) x+1 b)2x-1 c)5 d)2x+1

Acircle has a circumference of 28.36 units what is the diameter of the circle

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.

Pranza plotted point a in the coordinate plane below.