Two cars are traveling along long straight roads which meet at right angles. Car A starts from a point 120 miles south of the intersection and travels north at a rate of 45 miles per hour. At the same moment car B starts 20 miles west of the intersection and travels west at a rate of 40 miles per hour. At what rate is the distance between the two cars changing 2 hours later

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Amap of british columbia has a scale of 1: 1 723 000. the distance on the map between prince george and cache creek is 8 11/16 in. what is this distance to the nearest mile

For a research project in a political science course, a student has collected information about the quality of life and the degree of political democracy in 50 nations. specifically, she used infant mortality rates to measure quality of life and the percentage of all adults who are permitted to vote in national elections as a measure of democratization. her hypothesis is that the quality of life is higher in more democratic nations. read this research description carefully. pay attention to the following: how many variables are in this research? what is the scale of the variable for infant mortality? p1c4. what is the dependent variable in this research problem? p1c4. is this research descriptive or inferential? does this research involves single variable analysis or two or more variable analysis?