A bag contains 30 red marbles, 2 white marbles, and 8 gray marbles. You randomly pick out a marble, record its color, and put it back in the bag. You repeat this process 200 times. How many white or gray marbles do you expect to get?

If you randomly pick out a marble and replace it 200 times, you can expect

white or gray marbles to be chosen.

How did the roaring 20s mark the end of the progressive era? a. mass production reduced wealth disparity and turned public opinion pro business b. labor unions won big legislative gains in workers rights and disbanded c. public officials cut taxes on businesses and reduced spending on services d. america increasing influence in world affairs redirected public attention to foreign policy

Which factor has played the most important role in changing the way history is studied over time?

Abody of water that is surrounded by land on three sides and leads to a larger body of water is called