Solve.6x - 15.2 = 2x + 12
A. 6.8
B. 1.471
C. 0.147
D. 6.9
Answer: A
Mathematics
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Express the number in scientific notation.0.0000004
A. 4 × 10-6 B. 4 × 10-8 C. 4 × 10-7 D. 4 × 10-9
Mathematics
Show that the set is infinite by placing it into a one-to-one correspondence with a proper subset of itself.
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A. ?
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B. ?
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C.
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D. ?
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E. ?
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Mathematics
Solve the problem.From a distance of 45 feet from the base of a building, the angle of elevation to the top of the building is 67°. Estimate the height of the building to the nearest foot.
A. 18 ft B. 41 ft C. 106 ft D. 19 ft
Mathematics
Solve.Eight times a number, added to 7, is 47. Find the number.
A. 5 B. 320 C. -5 D. 40
Mathematics