Perform the indicated operation. Assume that all variables are nonnegative.(
+ 
)(
- 
)
A. a + b
B. a + 2
- b
C. a - b
D. a - 2
+ b
Answer: C
Mathematics
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Evaluate the expression.(-7)2
A. -14 B. -49 C. 14 D. 49
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Determine whether the pair of lines is parallel, perpendicular, or neither.y = 4x + 4x - 4y = 8
A. parallel B. perpendicular C. neither
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Find an equation for the hyperbola described.Focus at (3, 6); vertices at (8, 6) and (6, 6)
A. (x - 6)2 - 
= 1
B. 
- (y - 6)2 = 1
C. 
- (y - 7)2 = 1
D. (x - 7)2 - 
= 1
Mathematics
Use natural logarithms to evaluate the logarithm to the nearest thousandth.log9 81
A. 0.500 B. 1.908 C. 9.000 D. 2.000
Mathematics