Girls to boys at concert 2: 7 . 250 more girls than boys, how many boys

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Can someone me out here and the tell me the greatest common factor

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?