Use a calculator to find the value of y in degrees rounded to two decimal places.y = sec-1 6.297
A. 9.14°
B. -9.02°
C. 9.02°
D. 80.86°
Answer: D
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (7t - 4t3)i + 2tan(3t)j + e5tk
A. a
= - 2?i + 72j + 25e5/12?k
B. a
= - 2?i - 72j + 25e5/12?k
C. a
= - 2?i - 72j + 25k
D. a
= 2?i + 72j + 25e5/12?k
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Use the coordinates of the indicated points to find the slope of the line.
A. - 
B. 4
C. -4
D. 
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The graph of a function f is given. On the same axes, sketch the graph of f-1. 
A.
f-1
B. 
C. 
D.
f-1
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Factor using the ac-method.48x2 + 28xy + 4y2
A. prime B. (12x + 4y)(4x + y) C. 4(3x - y)(4x - y) D. 4(3x + y)(4x + y)
Mathematics