Identify the equation as either an identity or not.tan A + tan B = 
A. Not an identity
B. Identity
Answer: B
Mathematics
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the y-axis.y = 9x3, y = 9x, for x ? 0
A. 
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B. 
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C. 
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D. 
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Mathematics
Find the inverse of the matrix, if it exists.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find an equation for the parabola described.Vertex at (7, -9); focus at (3, -9)
A. (x + 8)2 = -4(y - 4) B. (y + 4)2 = -12(x - 8) C. (x + 8)2 = 4(y - 4) D. (y + 9)2 = 16(x - 7)
Mathematics
The graph of a function f is given. Use the graph to answer the question.What is the y-intercept?
A. 25 B. -15 C. 17.5 D. -20
Mathematics