A bag contains blue marbles and red marbles, 56 in total. The number of blue marbles is 8 more than 2 times the number of red marbles. How many blue marbles are there?

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

92ft long and 48 wide resurface 2.75$

If the alternate hypothesis of an experiment is “the true mean height of the giraffes is more than 15 feet” what is the null hypothesis?