I need someone who knows 9th grade geometry to help will my congruence proofs and reasons. Will name brainliest Will give 90 points to anyone who helps me all of the way
Won't take long at all

Icould really use some with this question.

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

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.