See below a histogram of the ages of n=279 patients being treated for back pain. Estimate the mean and standard deviation of the ages of back pain patients. Assume the graph is close enough to bell-shaped to use the 95% rule

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241

Divide. write in the simplest form. 4 1/6 divided by 10

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1