Given the formula: V = 763.8, r = 4.Find h. 

A.
B.
C.
D.
E.


Answer: A

Mathematics

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Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?

A. 0.438 B. 0.487 C. 0.91 D. 0.856

Mathematics

Multiply.-9x ? 7x

A. -63x B. -126x C. -126x2 D. -63x2

Mathematics

Find the diameter of the circle.

A.
B.
C.
D.

Mathematics

Find the equation of the tangent line at the given point on the curve.3x2 + 4xy + y2 + x - 2y = -7; (-1, 3)

A. x = -1 B. y = 3 C. y = -x + 3 D. y = -x - 1

Mathematics