Show that among an odd number of people there is at least one person who is an acquaintance of an even number of people and therefore also a stranger to an even number of people.

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Student price tickets to a movie are $1 and non student tickets are $2 . 350 tickets are sold and the total amount made is $450. there were 250 student tickets sold . true or false .

Which expression gives you the distance between the points (5,1)and(9,-6)