Express the number in scientific notation.870,000
A. 8.7 × 105
B. 8.7 × 104
C. 8.7 × 10-4
D. 8.7 × 10-5
Answer: A
Mathematics
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Match the vector equation with the correct graph.
r(t) = 2 cos ti + sin tk; 0 ? t ? ?
A. Figure 2 B. Figure 7 C. Figure 6 D. Figure 4
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Graph.
+ 
= 1
A. 
B. 
C. 
D. 
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Use your estimation skills and the percent shortcuts to select the most reasonable answer. Do not write an equation and solve it.75% of $1380 is how much?
A. $460 B. $2415 C. $345 D. $1035
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Write in logarithmic form.
= 8-2
A. log8 (-2) = 
B. log8 
= 8
C. log
8 = -2
D. log8 
= -2
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