The two triangles below are similar. Find x and y.
A. x = 4.9; y = 3.6
B. x = 5.6; y = 3.9
C. x = 1.60; y = 3.6
D. x = 4.9; y = 3.9
Answer: A
Mathematics
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Find d2y/dx2 without eliminating the parameter.x = 1 - 10sin t, y = 1 + 9cos t, t ? n?
A. - 
sec t
B. - 
sec3t
C. 
cot t
D. - 
sec3t
Mathematics
Use scientific notation to perform the computation. Leave the answer in scientific notation.
A. 2.0 × 10-3 B. 2.0 × 10-1 C. 2.0 × 10-2 D. 2.0 × 102
Mathematics
Sketch the graph and show all local extrema and inflection points.f(x) = |x2 - 3x|
A. Local maximum: 
Inflection points: (0, 0), (3, 0)
B. Local minima: (0, 0), (3, 0)
Local maximum: 
No inflection points
C. Local minimum: 
No inflection points
D. Local minima: (0, 0), (3, 0)
Local maximum: 
Inflection points: (0, 0), (3, 0)
Mathematics
Factor.n3 - 
A. 
B. 
C. 
D. 
Mathematics