Which equation shows the substitution method being used to solve the system of linear equations?
x+y=6
x=y+2
a x+(y+2)=6
b (y+2)+y=6
c x=(x-6)+2
d x+y=y+2

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

Akitchen is 12 ft. by 14 ft. with 10 ft. high walls. how much would it cost to put vinyl flooring in this room? $8.80 per ft

If a distance of 75 yds is measured back from the edge of the canyon and two angles are measured , find the distance across the canyon angle acb = 50° angle abc=100° a=75 yds what does c equal?