Line segment ab and cd bisects at o. join ac and bd. prove that triangle aoc congruent to triangle bod

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.

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?

Write the ratio as a fraction in lowest terms 1 1/3 to 1 2/3