Is 2/3 equivalent to 1/9

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d.y +14z