You volunteer to help drive children at a charity event to the zoo, but you can fit only 7 of the 20 children present in your van. How many different groups of 7 children can you drive?

Which of the following is an example of conditional probability

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?

On ryan's last social studies test there were two types of questions true/false worth 3 points each and multiple choice questions worth 4 points each