For 50 points

use a graphing calculator to find the value of f(x) when x = −4 for the function
f(x) = -5/2 x^2 −5.
f (−4) =

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

At oaknoll school, 90 out of 270 students on computers. what percent of students at oak knoll school do not own computers? round the nearest tenth of a percent.