Solve the problem.Find the value of k so that the graph of 9y + kx = 4 and the line containing the points (5, -8) and (2, 4) are perpendicular.
A. k = 36
B. k = 2.25
C. k = -2.25
D. k = -36
Answer: C
Mathematics
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Solve the problem.The radius r and height h of a cylinder are changing with time. At the instant in question, 
and 
At what rate is the cylinder's volume changing at that instant?
A. 0.13 cm3/sec B. -0.06 cm3/sec C. 0.25 cm3/sec D. 1.01 cm3/sec
Mathematics
Solve the equation for the indicated variable.2 - (n - 0.2x) = 3n for x
A. 10 n - 2
B. 20 n - 10
C. 
D. 10 - 20 n
Mathematics
Using the exponential key of a calculator to find an approximation to the nearest thousandth.2.915-2.2
A. 0.118 B. -9.958 C. 0.095 D. 0.156
Mathematics
Find the binomial probability.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics