If there are 7,674,000,000 people in the world and 80,000 of them have a Reh, what is the probability at least one person has a Reh out of a random group of 3000 people?

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

In an isosceles triangle, the vertex angle is 112 degrees. what is the measure of each base. a.34 b.24 c.44 d.54