20 POINTS! HELP ME ASAP PLEASE! Scientists tag and release a group of salmon after they hatch. Later, they catch a
sample of salmon that return to the river and check them for tags. In one sample, 40
out of 800 returning salmon have tags. What is the best prediction of the total
number of tagged salmon in a sample of 2000?

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

3c2 + 2d)(–5c2 + d) select all of the partial products for the multiplication problem above.