Perform the indicated operation. Express the answer in scientific notation.
A. 2.0 × 103
B. -1.5
C. 2.5 × 104
D. 5.0 × 10-9
Answer: D
Mathematics
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Solve.The sum of the squares of the digits of a positive two-digit number is 20, and the tens digit is 2 more than the units digit. Find the number.
A. 42 B. 24 C. 35 D. 53
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Write the number in scientific notation.819,000
A. 8.2 × 10-5 B. 8.2 × 105 C. 8.2 × 10-4 D. 8.2 × 104
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Determine the number of triangles with the given parts.a = 15, b = 27, ? = 97°
A. 2 B. 1 C. 0 D. 3
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