A youth league soccer team has 20 students who play the defender positions and 23 students who play midfielders positions. Write a ratio of students who play defender positions to the total number of students who play defender or midfielder positions. pls help me and you will get 100 point guy's so help me.

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Which of the following circles have their centers in the third quadrant? check all that apply.