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David can finish painting the room in 6 hours, and his elder brother antony can finish it in 4 hours. if both brothers paint the room together, how many hours will it take them?
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The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.
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In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.
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What is always true about a positive integer raised to a negative odd power?
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Afunction, f(x), represents the height of a plant x months after being planted. students measure and record the height on a monthly basis. select the appropriate domain for this situation. a. the set of all positive real numbers b. the set of all integers oc. the set of all positive integers od. the set of all real numbers reset next
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