Janel's study group started 3:00. Her friends Jackson and Teagan arrive at 10 minutes after 3. Her friend Natalie arrives 45 minutes later. When did Natalie arrive? Write this time in two other ways.

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?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Proving the congruent supplements theorem