(1) do you enjoy being out in the fresh air? (2) does nature restore your spirits? (3) you might want to consider hiking as a hobby. (4) it's a hobby you can begin with very little expense. (5) all you need to start is a good pair of hiking shoes. 20. the first sentence in the paragraph to the main idea of the paragraph. a. introduce b. delay c. specify d. explain

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