A tile is drawn from a bag at random and then replaced. The probability of drawing a blue tile is 80% and the probability of drawing a red tile is 20%.
What is the expected number of blue tiles in 25 draws?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.