Use the imaginary unit to write the expression.
A. 10i
B. -10
C. -10i
D. 10
Answer: A
Mathematics
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = (9t sin t + 9 cos t)i + (9 t cos t - 9 sin t)j ; -2 ? t ? 5
A. 189 B. 130.5 C. 261 D. 94.5
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Make the indicated conversion within units of time.Convert 
minutes to seconds.
A. 850 seconds B. 510 seconds C. 42.5 seconds D. 170 seconds
Mathematics
Provide an appropriate response.Explain why the order in which coordinates are subtracted to find slope does not matter as long as x-coordinates are subtracted in the same order as y-coordinates.
What will be an ideal response?
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Graph the line through the given point with the given slope.(10, 0), m = - 
A. 
B. 
C. 
D. 
Mathematics