The sum of the speeds of two trains is 718.7 miles per hour. if the speed of the first train is 3.3 mph faster than that of the second train, find the speeds of each.

Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)