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Aclass has 30 students,17 have taken science,19 have taken arts and two students have enrolled in any course. how many students enrolled in both science and arts ?
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The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?
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20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm
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Are the corresponding angles congruent? explain why or why not.
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