The price of gasoline purchased varies directly with the number of gallons of gas purchased. If 19 gallons are purchased for $22
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This is the isosceles triangle. Therefore, the angles at the base are congruent.
We know that the sum of the measures of the angles in a triangle is 180°.
Therefore we have the equation:
<em>subtract 38 from both sides</em>
<em>divide both sides by 2</em>
A football field is rectangle so each matching side has the same length. Perimeter = adding all sides
