Figure EFGH on the grid below represents a trapezoidal plate at its starting position on a rotating surface: A trapezoid EFGH drawn on a 4 quadrant coordinate grid with vertices at E negative 4, 8. F is at negative 7, 5. G is at negativ The plate is rotated 90° about the origin in the counterclockwise direction. In the rotated trapezoid, what are the coordinates of the endpoints of the side congruent to side EF? (1 point)

(−8, −4) and (−5, −7)

Step-by-step explanation:

i just took the test, trust me my cheating warriors.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

answer: 7

step-by-step explanation: