Determine whether the variation between the indicated quantities is direct or inverse.The base length and height of a triangle of area 6 cm2
A. Inverse
B. Direct
Answer: A
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Use a spherical coordinate integral to find the volume of the given solid.the solid bounded below by the xy-plane, on the sides by the sphere 
and above by the cone 
A. 
?
B. 
?
C. 32?
D. 16?
Determine the value of the variable so that the equality is a proportion.
= 
A. 7.5 B. 0.2 C. 47.1 D. 4.8
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
Solve the problem.pH = -log10[H+] Find the pH if the [H+] = 1.3 x 10-5.
A. 5.89 B. 4.11 C. 5.11 D. 4.89