25. A car traveled 324 miles on 54 gallons of gas. How many gallons of gas are needed to travel 186 miles?
Proportions

31 gallons of gas are needed to travel 186 miles

Step-by-step explanation:

Well since it took 54 gallons of gas to travel 324 miles you would divide 324 by 54 to find out how many miles could go into each gallon which would be 6 miles per gallon of gas so you would know that 186 divided by something would be 6 so you would do 186 divided by 6 instead to find the answer. So 31 gallons of gas are needed to travel 186 miles.

324/54 = 6

186/? = 6

186/6 = 31

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

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step-by-step explanation: