Find an equation of the tangent line at x = a.y = 
; a = 5
A. y = 5x - 25
B. y = 5x + 12.5
C. y = 5x - 12.5
D. y = 10x - 12.5
Answer: C
Mathematics
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What will be an ideal response?
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Perform the indicated calculation.Calculate a21 + a22a12 for the matrix A = 
.
A. 285 B. -13 C. -48 D. -43
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Match the given equation with one of the graphs.x2 - y2 = 121
A. 
B. 
C. 
D. 
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Solve the problem.From the edge of a 1000-foot cliff, the angles of depression to two cars in the valley below are 21° and 28°. How far apart are the cars? Round your answers to the nearest 0.1 ft.
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Mathematics