7,5,a,8,1,a,4,6,b have a mean of 5 and a variance of 3 ⁷/9. Calculate the value of a and b such that a, b € Z+

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?

Point b lies between points a and c on . let x represent the length of segment ab in inches. use the segment to complete the statements. the value of x is . the length of in inches is . the length of in inches is .

Graph the following system of linear inequalities. identify at least two points in the solution: y < 5 - 2x | x + 5y > -7