Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.2x + 3y + 4z = -3 and 9x + 8y + 9z = 1
A. 1.026 rad
B. 0.271 rad
C. 1.459 rad
D. 1.300 rad
Answer: B
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Assume that each of the n trials is independent and that p is the probability of success on a given trial. Use the binomial probability formula to find P(x). Round to four decimal places.n = 16, x = 3, p = 
A. 0.3202 B. 0.2463 C. 0.2709 D. 0.2955
Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = sec x, y = tan x, x = 0, x = 
A. 
B. 
C. 
D. 
Solve the problem.In a certain apportionment problem, State X has a standard quota of 73.9. The final apportionment to State X is 72 seats. This is called
A. the population paradox. B. the Alabama paradox. C. a lower-quota violation. D. an upper-quota violation. E. none of these
If a baseball pitcher has pitched 31 2/3 innings and has allowed 15 runs, find his ERA. [Remember the ERA (Earned Run Average) equals the number of earned runs allowed in 9 innings.]
What will be an ideal response?