the topic is Trigonometry( Angle Measures) im asking for the answers for all 6 will mark BRAINLIEST for the one that has gotten all of the questions right ​

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

Does the point (1, sqrt 7) lie on circle shown.

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?