There are 20 pens in a package. Ten of the pens are black, 8 are blue, and the rest are red. Which ratio represents the number of red pens to black pens?

A: 1/10

B: 1/5

C: 4/5

D: 5/1

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.