Find the difference.1 - (15 - 5)
A. 21
B. 11
C. -19
D. -9
Answer: D
Mathematics
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Express the number in scientific notation.0.000000709011
A. 7.09011 × 10-7 B. 7.09011 × 106 C. 7.09011 × 107 D. 7.09011 × 10-6
Mathematics
Find the center of mass of the wire that lies along the curve r and has density ?.r(t) = (7t2 - 1)i + 2tk, -1 ? t ? 1; 
A. 
B. 
C. 
D. 
Mathematics
Find a rectangular-coordinate equation for the curve by eliminating the parameter.  figure 1.png)
 figure 2.png)
Mathematics
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.15
- 5
A. 6
B. 9
C. 10
D. 10
Mathematics