We know there are 4 quarts in a gallon, so how many quarts in 2.5 gallons anyway?
An airplane is heading due north at 800 km h when it encounters a wind from the northeast at 100km h, what is the ground velocit
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keeping in mind that standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient