20 points The ratio of blue marbles to red marbles in a bag is 11:9. If there are 99 blue
marbles in the bag, how many red marbles are there?
18
35
81
121

In an experiment you are to flip a two sided coin 100 times and record 55 heads up and 45 tails up determine the theoretical and experimental probability of getting a heads up in the experiment.

Which expression gives the area of the triangle shown below

How do you use the elimination method for this question? explain, because i really want to understand!