The slopes of perpendicular lines are? will give brainliest for correct answer

Find the area of the regular hexagon if a side is 20 cm.

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585