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Solve the problem.
-From a point on a river, two boats are driven in opposite directions, one at 9 miles per hour and the other at 11 miles per hour. In how many hours will they be 40 miles apart?
Line
In geometry, a line is an infinitely long, straight one-dimensional figure having no thickness and extending in both directions.
Indeterminate
A condition where the outcome cannot be precisely determined or predicted.
Infinite
Without limit or end; extending beyond measurable or conceivable boundaries.
Negative
In economic context, it refers to a situation or outcome that reduces efficiency, value, or well-being.
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