a bag contains 6 blue coins and 4 red coins. a coin is removed at random and replaced by three of the other color.

part 1
what is the probability that the removed coin is blue? enter your answer as a simplified fraction.

the probability that the removed coin is blue is 3/5

part 2 out of 3
if the first coin removed is blue, what is the probability of drawing a red coin after three red coins are put in the bag to replace the blue one?

the probability of drawing a red coin after three red coins are put in the bag to replace the blue one that has been removed is

Find the distance between the pair of points a(-1,8) and b(-8,4)

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.