After substituting, what is the first step when evaluating StartFraction 4 y + 9 over 7 EndFraction when y = 8?

This is fractions casey shared a pizza with some friends.they each ate 1 third of the pizza. how many people shared the pizza

Acommunity group sells 2,000 tickets for its raffle. the grand prize is a car. neil and 9 of his friends buy 10 tickets each. when the winning ticket number is announced, it is found to belong to neil's group. given this information, what is the probability that the ticket belongs to neil? a.1/5 b.1/10 c.1/200 d.1/4

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?