Sylvia is going to pick out a souvenir hat while she is on vacation. She knows the price of the hat will increase by 5% when she
pays sales tax. She writes the expression h + 0.05h to find the total amount she will pay for the hat if it costs h dollars. Jin correctly writes another expression, 1.05h, that will also find the the total amount Sylvia will pay for the hat if it costs h dollars. Use the drop-down menus to explain what each part of Sylvia's and Jin's expressions mean.
The slope of a line is given by the change in y coordinates over the change in x coordinate. The slope of line DE will be (4 - -3)/ (7-1) = 7/6 If M1 and M2 are slopes of two perpendicular lines at a point then M1× M2 = -1 Thus, the slope of a perpendicular to line DE will be -6/7.
Answer: The sum of the number of angles in a polygon is (n-2) * 180, where n is the number of sides, so the sum of the angles of a 17-sided polygon is (17-2) * 180 = 2700.
