dracula split up $39 equally among 40 winner. what decimal is equivalent the to fraction of a dollar

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

Which of the following best describes the delian problem?