Witch figure shows the correct dimensions of a 1/4 scale drawings of the giving figure?

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

Solve the equation by completing the square. x^2+2x=17

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.