Find the slope of the line that passes through (8,4) and (10,1). Simplify your answer and write it as a proper fraction, improper fraction, or
integer.

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

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

What ia the sum if the first 7 terms of the geometric series