the dimensions of a square are altered so that one dimension is increased by 7 feet, while the other is decreased by 2 feet. the area of the rectangle is 90ft^2

Find the area of the triangle shown 3 by 6

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%

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?