The radius of a regular decagon, a 10-sided figure, is 15 units. the length of one side of the polygon measures about 9.3 units. what is the approximate area of the regular decagon rounded to the nearest tenth? 273.6 square units 547.3 square units 663.1 square units 1069.9 square units

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Find the distance between the point (-3,-4), and (see the picture below)

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?