Pls someone in the comments send a picture or make a problem for me to solve, because i need to study for a quiz tomorrow. I need a problem about properties of radicals. PLS HELP thank you :)

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?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.