y = - 5
substitute the value of x = 4 into the equation and solve for y
- 12 + 9y = - 57 ( add 12 to both sides )
9y = - 45 ( divide both sides by 9 )
y = = - 5
A truck gas an average speed of 50 miles per hour. How long will it take for the truck to go 550 miles
1 answer:
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