Tom went to a shop where there was a 20% off sale taking place The shirt he wanted was originally 20$
How much money does he save in the sale?

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?

Which one is the correct answer, and why?

Arectangle has a length of 6cm by 8cm what is the length of a diagonal of the rectangle