Jennie leaves school in a car traveling north at a rate of 45 mph. At the same time Albert leaves school in a car traveling south at a rate of 55 mph. In how many hours will Albert and Jennie be 250 miles apart?

3. a sum of $2700 is to be given in the form of 63 prizes. if the prize is of either $100 or $25, find the number of prizes of each type.

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

Round to the nearest ten thousandth.i dont get this