Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(
+ 
)(
- 
)
A. 
+ 
- 
+ 19
B. 
+ 
+ 
- 19
C. 
+ 
- 
- 19
D. 
+ 
+ 
+ 19
Answer: C
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Answer the question.Use the table of record trout lengths at Yosemite Lake to answer the question. To find the average, add up the values you are interested in and then divide the sum by the number of values. Round your answer to the nearest tenth. 
Find the average length of record trout caught during a weekday.
A. 13.9 in. B. 19.5 in. C. 14.2 in. D. 71.2 in.
Find the vertices of the hyperbola.16(y + 6)2 - 9(x - 2)2 = 144
A. (-2, 9) and (-2, 3) B. (-2, -6) and (6, -6) C. (2, -3) and (2, -9) D. (-6, 6) and (2, 6)
Solve using Gauss-Jordan elimination. x1 + x2 = 0 x1 - x 2 = 12
A. (-6, -5) B. (6, -6) C. (5, -5) D. (-5, -6)
Use an appropriate identity to find the exact value of the expression.tan 
A. 
B. -2 - 
C. 
D. 2 + 