On a violin achievement test, the final score is made up of 75% performance, 10% sight reading, and 15% written theory. samantha earned an average score of 90 on performance, 95 on sight reading, and 82 on written theory. what was samantha's final score for the violin achievement test?asap!

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?