When Dragon breaths fire, the length of the stream is modeled by the function: s(t) where t is the elapsed time in seconds, and s is the length of the stream in feet. What is the speed of the stream at the exact instant it hits its target that is 38.5 feet away? The equation: s (t) = 0.5t²+2t

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

Name the most appropriate metric unit for each measurement like a length of an carrot

We just started the introduction into circles and i have no idea how to do this.