The circumference of a circle is 15ft. what is the length of the radius? use 3.14 for pi. round your answer to the nearest tenth of a foot.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

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.

In the diagram, gef and hef are congruent. what is the value of x