50 points! Is this triangle scalene or isosceles? 1st picture is the question 2md picture is the triangle on a graph

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 quotient with the restriction.

What is the product? a-3/15a × 5/a-3