Giulio's bag of marbles is twice as heavy as jim's. if it takes 5 extra marbles to make jim's bag feel heavier, it will take 10 extra marbles to make giulio's bag feel heavier. this best illustrates:

      Current Weight         Weight after adding Marbles

Giulio:    2x                          2x + 10                    

Jim:         x                             x + 5

You didn't post the options so hopefully you can determine the answer based on the info I provided above.

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.

12

step-by-step explanation: