Write an equation that can be used to solve the problem. Then solve the equation and answer the question.Five divided by the sum of a number and 9, minus the quotient of 3 and the difference of the number and 9 is equal to 6 times the reciprocal of the difference of the number squared and 81. What is the number?
A. -33
B. 39
C. - 
D. 12
Answer: B
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Use the Concavity Theorem to determine where the given function is concave up and where it is concave down. Also find all inflection points.G(x) = 
x4 - x3 + 14
A. Concave up for (2, ?), concave down on (-?, 2); inflection point (2, 10) B. Concave up for (-?, 0), concave down for (0, ?); inflection point (0, 14) C. Concave up on (-?, 0) ? (2, ?), concave down on (0, 2); inflection points (0, 14) and (2, 10) D. Concave up on (0, 2), concave down on (-?, 0) ? (2, ?); inflection points (0, 14) and (2, 10)
Parametrize the surface S.S is the portion of the cylinder x2 + y2 = 36 that lies between z = 5 and z = 6
What will be an ideal response?
Find the power of i.i21
A. i B. -1 C. 1 D. -i
Find all values of x satisfying the given conditions.y1 = 
, y2 = 
, y3 = 
, and y1 - y2 = y3
A. {28}
B. {
}
C. {56}
D. {-28}