7. Ruben has colored t-shirts in a drawer that he wears for work. He has the following shirts: • 5 red shirts • 7 yellow shirts • 10 blue shirts • 2 orange shirts If Ruben picks a t-shirt from the drawer without looking, what is the probability, he will pick a blue t-shirt? Need help ASAP
The best answer from someone will be put on brainlist!!!

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

Simplify the expression. -2/5(10+15m-20n)

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0