In the triangle below, what is the measure of r?

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?