Give sin x = 3/5 and x is in qudrant 2, what is the value of tanx/2?

What is the smallest integer n such that n\sqrt{2} is greater than 20

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum