The vertices of δabc are a (1, 5), b (3, 9), and c (5, 3). the vertices of δdef are d (−3, 3), e (−2, 5), and f (−1, 2). which conclusion is true about the triangles? a the ratio of their corresponding sides is 1: 3. b they are congruent by the definition of congruence in terms of rigid motions. c the ratio of their corresponding angles is 1: 3. d they are similar by the definition of similarity in terms of a dilation.

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.