How many triangles can exist with the angles 40 25 115

Find the sum of the following series. round to the nearest hundredth if necessary.

Identify whether the figure has plane symmetry, symmetry about an axis, or neither.

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.