Which fraction are equivalent to 4/9

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

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?

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get