Rohman places a ladder against his house in order to clear his gutters of leaves. The ladder just reaches the top of the gutters 12 feet above the ground and the base of the ladder is 11 feet from the house. Which is the best approximation of the angle of elevation from the ladder to the ground?

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

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.

Determine which postulate or theorem can be used to prove that lmn =nmo