Find the correlation coefficient.Consider the data points with the following coordinates: 
A. 0.1085
B. -0.0537
C. -0.0783
D. 0.2145
Answer: A
Mathematics
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Find the value of d2y/dx2 at the point defined by the given value of t.x = t + cos t, y = 2 - sin t, t = 
A. -2
B. -4
C. -
D. 
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Write the number in scientific notation.0.082
A. 82 × 10-2 B. 8.2 × 10-3 C. 8.2 × 10-2 D. 82 × 10-3
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The tension T at each end of the chain has magnitude 27 N and makes an angle ?a=27 °with the horizontal. What is the weight of the chain? Round the result to the nearest hundredth.
 Figure 3.png)
Mathematics
Solve.30x2 - 27x = 6x2 - 6x
A. 0, - 
B. 0, 
C. 3, 
D. -3, - 
Mathematics