Rst is a right triangle rs=12 rt=20 st=15 what is sin r

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265