1inch=2.54 centimeters 68 centimeters= inches (round the answer to two decimal places)

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

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?

X+y=-4 x-y=2 use elimination with adding and subtraction