7x398 thats the questioni need you to answer hahah

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?

4. jake needs to score in the top 10% in order to earn a physical fitness certificate. the class mean is 78 and the standard deviation is 5.5. what raw score does he need? z value for top 10% =1.282 how do i get the z value? what is the equation for this? raw score =mean+z*sd = 78+1.282*5.5 = 85.051