có 3 nhóm sinh viên, nhóm 1 có 4 nam 5 nữ, nhóm 2 có 5 nam 6 nữ, nhóm 3 có 6 nam 7 nữ. chọn ngẫu nhiên một nhóm sinh viên. tính xác suất có ít nhất 2 sinh viên nữ

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

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°

Seattle, washington is known for being rainy. one day last month, 8 inches of rain fell in 1 1/2 hours. what us the rate of the rainfall expressed in ft per plzzz write a proportion i will give you 100 points