Which is the simplified form of r^-7 + s^-12? arrows to the left of -7 and -12 represent exponents, options are, a. 1/r^7s^12 b. -r^7 - s^12 c. r^7/s^12 d.1/r^7 + 1/s^12

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Me. i can't figure out this question. give an explanation too. .

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?