In 1989, an earthquake with a magnitude of 6.9 on the richter scale hit northern california. in 2008 an earthquake with a magnitude of 5.4 hit southern california. how many times more intense was the earthquake in 1989 than the one in 2008.

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?

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.

Find the solution on the interval [0, 2pi)