You estimate that there are 80 marbles in a jar. the actual amount is 76 marbles. find the percent error. round to the nearest tenth of a percent if necessary.

Graph the equation by plotting point x=2

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

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.