What is the mean of 72,74,70,64,80

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

The poll report includes a table titled, “americans using cash now versus five years ago, by age.” the age intervals are not equal. why do you think the gallup organization chose the age intervals of 23–34, 35–54, and 55+ to display these results?