The square of 9 less than a number is 3 less than the number. what is the number?

a) –12 or 7
b) –12 or –7
c) –7 or 12
d) 7 or 12

Given (1+cosx)/(sinx) + (sinx)/(1+cosx) =4, find a numerical value of one trigonometric function of x. a. tanx=2 b. sinx=2 c. tanx=1/2 d. sinx=1/2

The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.

What percent of the circle below is shaded?