Can someone please check my work! question: simplify the expression and rationalize the denominator. 16x^4y^8 / 5 if it’s wrong can you please explain step by step and what i did wrong please :) and thank you.

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.