Tim goes on a car journey. For the first 20 minutes his
average speed is 60 mph.
He then stops for
20 minutes.
He then completes the
journey at an average
speed of 35 mph.
The total journey time
is 1 hour.
a) Draw a distance-time
graph for his journey.
b) What is the average
speed for the whole
journey?
mph

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.

The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cone's base is 5 centimeters, and its height is 10 centimeters.

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?