Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.9x + 2y + 4z = -7 and 4x + 7y + 5z = 8
A. 0.824 rad
B. 0.746 rad
C. 1.550 rad
D. 1.413 rad
Answer: B
Mathematics
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Graph the equation.(y - 2)2 = -8(x - 1)
A. 
B. 
C. 
D. 
Mathematics
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083
Mathematics
Write an equation for the hyperbola.
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Evaluate the given binomial coefficient. 
A. 1287
B. 154,440
C. 
D. 51,891,840
Mathematics