Express the number in scientific notation.4,200,000,000,000
A. 4.2 × 109
B. 4.2 × 1012
C. 4.2 × 10-12
D. 4.2 × 10-9
Answer: B
Mathematics
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Describe the level surfaces and write an equation for the surface T = 300.
What will be an ideal response?
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