West virginia became a leader in the coal mining industry. which is one reason for the success of this state's new industry in the late 1800s? a)transportation from the mines to the waterways was provided by a railway system. b)the demand for coal was greater due to the failure of electricity to power factories. c)coal was easy to get, and it was an environmentally friendly, safe source of fuel. d)the lumber industry was failing, so there were plenty of workers available to work the mines.

A)Transportation from the mines to the waterways was provided by a railway system.

Explanation: I got this right on Edmentum

x=4, y=4

step-by-step explanation:

y=2x-4;

x+2y=12

we can use substitution since the first equation is solved for y

where ever you see y in the second equation, replace it with 2x-4

x + 2(2x-4) = 12

distribute the 2

x+4x-8 = 12

combine like terms

5x-8=12

add 8 to each side

5x-8+8=12+8

5x=20

divide by 5

5x/5 = 20/5

x =4

we still need to solve for y

y = 2x-4

we know x =4

y = 2(4) -4

y = 8-4

y=4