Use a sketch to find the exact value of y.y = cos
A. 
B. 
C. 1
D. 0
Answer: A
Mathematics
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Find the unit tangent vector of the given curve.r(t) = 
(1 + t)3/2i + 
(1 - t)3/2j + 
tk
A. T(t) = 
i + 
j + 
k
B. T(t) = 
i - 
j + 
k
C. T(t) = 
i - 
j + 
k
D. T(t) = 
i - 
j + 
k
Mathematics
Find an equation of variation in which y varies inversely as x and the following is true.y = 47, when x = 25
A. y = 
B. y = 1175x
C. y = 1.88x
D. y = 
Mathematics
Does the pair of triangles appear to be similar? Write similar or not similar.
A. Similar B. Not similar
Mathematics
Graph the solution set of the system of inequalities or indicate that the system has no solution.y ? 12 ? x ? 6x - 2y ? -2x + y ? 6
A. 
B. 
C. 
D. 
Mathematics