Ages of the first 6 presidents are 57,61,57,57,58,57. How many presidents fall within one standard deviation of the mean

A rectangle has the following vertices: A (-1,9), B (0, 9), C (0, - 8), D (-1, - 8). What is the area of rectangle ABCD?

Use the formula F=9/5C+32 to convert 24°c to degree F

What is the equation 9-x2=9

Find the quadratic polynomial ax^2+bx+c which best fits the function f (x) = 8^x at x=0, in the sense that g (0) = f (0), and f' (0) = g' (0), and f'' (0) = g'' (0). g (x) = ?

Find an exact value. sine of eleven pi divided by twelve.

6t - 6, for t = 6 A 42 B 29 C 30 D 43

Find the ratio a:b, if it is given that ... 1) 2a=9b 2) a/5 = b/7 3) 6a-3b=5b 4) a+b=3b 5) a-2b/a+2b = 1/2 6) 2a-3b/5 = a+b/3

A box contains one yellow, two red, and three green balls. Two balls are randomly chosen without replacement.

Three brothers share 2 sandwiches equally. Hoe much of a sandwich does each brother get?

The mathematics department of a college has 6 male professors, 12 female professors, 10 male teaching assistants, and 9 female teaching assistants.