Perform the indicated operation. Write the answer in proper scientific notation.(2.7 × 104) × (3.0 × 106)
A. 0.81 × 1010
B. 8.1 × 1011
C. 8.1 × 1010
D. 8.1 × 109
Answer: C
Mathematics
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A. 0.189205 B. 0.079205 C. 0.089205 D. 0.099205
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Find the probability of the event.When a single card is drawn from an ordinary 52-card deck, find the probability of getting a black 7.
A. 
B. 
C. 
D. 
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x? = x ? xy , y? = ?0.6y + 0.2xy
What will be an ideal response?
Mathematics
Write the ratio of 25 gal in 10 min as a fraction and simplify.
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