Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year or approximately 5.88 x 10 miles. Suppose a star is 1.85 x 10° light-years from Earth. In scientific notation, approximately how many miles is it?

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Ineed if you could explain and give me the answer you! this needs done

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0