If the "on-deck" circle has a diameter of 6 feet, which expressions could be used to determine the length of the chalk outline?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8