There are 44 learners in Mary's class. The ratio of the number of girls to number of boys is 5:6. How many boys are in Mary's class?​

The equation of line wx is y=2x-5. write an equation of a line perpendicular to line wx in slopeintercept form the contains points (-1,-2)

Is (0,0) a to ? ys x2 - 4 y> 2x-1

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