Represent the following expressions as a power of the number a (a≠0):
((a^2)^−2)^5÷(a^15)

Solve for x by completing the square. 2x^2-4x+7=0

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?

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct