Solve the system of equations.
x+8y=-4
5x+4y=-20

Classify the following triangle check all that apply

Multiply. write your answer in simplest form. 3/8 x 5/7

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%