The ratio of red marbles to blue marbles in a bag is 4: 7. there are 16 red marbles. how many blue marbles are there? solve for indicated variable.

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

Quadrilateral abcd is a parallelogram with diagonals that intersect at point e. which of the following statements is true?