Solve the following system of equations:
x − 2y = 5
2x − 4y = 10
a. infinitely many solutions
b. no solutions
c. (0, 0)
d. (5, 10)

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq