Carmichael's car used 8 gallons of gasoline to travel 340 miles after mechanic worked on the car it used 7 gallons of gasoline to travel 350 miles if the price of gasoline was approximately 4.00 per gallon. , how much less to the nearest cent per mile did it cost to run the car after the mechanic worked on it

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0