The table shows weights for different US coins. Allen has one of each coin in his hand.

In the diagram of circle a what is m

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days