The students in Jeremiah's grade voted to select a guest speaker. 45 students voted for a famous athlete. If there are 90 students in Jeremiah's grade, what percentage of the students voted for the athlete? Write your answer using a percent sign (%).

The equation m = 19.32v can be used to find the mass m in grams of a pure gold coin with volume v in cubic centimeters. carl has a coin with a mass of 37.8 grams. the coun's volume is 2.1 cubic centimeters. could the coin be pure gold? explain your reasoning. whoever answers this correctly gets marked brainliest! this is also worth a decent amount of points than normal questions!