3of 6 ryan and mary are both travelling by train. ryan's train travels 80 km in 50 minutes. mary's train travels 270 km. it leaves at 13: 10 and arrives at 15: 25. work out the difference, in km/h, between the average speed of their trains. km/h

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Two positive integers are 3 units apart on a number line. their product is 108. which equation can be used to solve for m, the greater integer? m(m – 3) = 108 m(m + 3) = 108 (m + 3)(m – 3) = 108 (m – 12)(m – 9) = 108

Select the lengths in centimeters that would form a right triangle