What is the total surface area of this trapezoidal prism , 8, 4, 14 6, 4.47

What is the result of adding the system of equations? 2x+y=4 3x-y=6

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

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.