In a hostel, 80 students have food enough for 45 days. How many students should leave the hostel so that the food is enough for 60 days?

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Find x to the nearest hundredth place

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?