What is 5kg in the ratio of 7:3

How far could you drive on 50 gallons of gas

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%

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.