The mean output of a certain type of amplifier is 121 watts with a standard deviation of 12 watts. If 69 amplifiers are sampled, what is the probability that the mean of the sample would be greater than 123.1 watts? Round your answer to four decimal places.

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

The surface area of the triangular prism is .

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?