1-cos^2 (12) - cos^2 (78) simplified with radicals if needed

Sam is rolling a number cube with the numbers 1, 1, 2, 2, 3, and 3 printed on it. What is the probability that, if he rolls the cube twice, the sum of the numbers will add to 4?

Ink cartridges weigh 1/8 pound. The total weight of the cartridges in a box is 4 1/2 pounds. How many cartridges does the box contain?

A rectangle is three times as long as it is wide. The perimeter is 36 cm. calculate the length of of each side

What is the positive solution to the equation 2x^2+25=73

The big intertional marathon is run on the california coast each spring. Seans mother was the women overall winner. How much less time disnit take seans mother than the womens winner in the age 65-69 group

The sales totals at Macy's food store have increased exponentially over the months. Which of these best shows the sales in the first three months?

There are 613 students split into different 24 different classes about how many students are in each class

Maria's family hosts a barbeque every month in the summer. In May, they bought 3.2 pounds of hamburger and 3 packages of hot dogs. In June, they bought 1 1/2 times as much hamburger and 1/3 as many hot dogs. Hamburger costs $4.

A bag Contains rubber bands with lengths that are normally distributed with a mean of 6 cm of length, and a standard deviation of 1.5 cm. What is the probability that a randomly selected nail is between 4.5 and 7.5 cm long?

Is the function y = 8x - 4 linear or nonlinear?