Setting up the equation: \( (n - 2) \times 180 = 1440 \).

February 22, 2026

$Setting up the equation: \( (n - 2) \times 180 = 1440 \).$

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The time required is 480 liters / 8 liters per minute = 60 minutes.
If the sum of the angles in a polygon is 1440 degrees, how many sides does the polygon have?
The formula for the sum of the interior angles is \( (n - 2) \times 180 \) degrees, where \( n \) is the number of sides.
Solving for \( n \): \( n - 2 = 1440 / 180 = 8 \), so \( n = 10 \).
A mixture contains alcohol and water in the ratio 3:2. If there are 15 liters of alcohol, how much water is there?
Let the amount of water be \( x \).

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