Balls numbered 1 through 10 are in a bag. someone draws a ball, records the number, the puts it back. another person does the same. what is the probability of drawing a prime then a composite?

Consider the line y = -3/-2 x +6. find the equation of the line that is perpendicular to this line and passes through the point (-9,-3). find the equation of the line that is parallel to this line and passes through the point (-9,-3).

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years