Cash register has $5.30 there are twice as many nickels than quarters and 8 more dimes than quarters, how many dimes does it have in register

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%

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.