0.01x - 0.3y = 1 y = 0.1x - 2 which of the following systems is equivalent to the given system? a) x - 30y = 100 and 10y = x - 20 b) x - 3y = 10 and 10y = x - 20 c) 10x - 30y = 10 and 10y = x - 20

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 two numbers if their sum is 91 and the ratio is 6: 7?

286 divided by 457.6 what is the quotient?