It took Nora 10 hours to walk a 30 mile trail. How long did it take her to walk 9 miles at the same speed
2 answers:
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Answer:
2
Step-by-step explanation:
Substitute y=2x in the first equation into the second.
The second equation then becomes;
x = -(2x)+6
x = -2x+6
Collectiing like terms, more -2x to the left,
x+2x =6
3x=6
x=
x= 2