The gravitational force (in Newtons), exerted on an object by the earth varies inversely with the square of the object's distance from the center of the Earth. The radius of the earth may be estimated to be 3959 miles and an astronaut with a mass of 210 pounds weighs approximately 934.127N on the Earth's surface. Calculate the approximate weight of the astronaut (in Newtons) when he is 12 miles above the earth's surface.

The diagram shows corresponding lengths in two similar figures. find the area of the smaller figure. a. 14.4 yd2 b. 24 yd2 c. 26.4 yd2 d. 28

Which is f(5) for the function –2x2 + 2x - 3?

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain