Perform the indicated operation.(4a - 6) - (a - 2)
A. 4a - 4
B. 3a - 8
C. 4a - 8
D. 3a - 4
Answer: D
Mathematics
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Find the exact value of the indicated trigonometric function of ?.tan ? = - 
, ? in quadrant IIFind cos ?.
A. - 
B. 
C. 
D. - 
Mathematics
Convert the equation to the standard form for a hyperbola by completing the square.x2 - y2 - 2x + 4y - 4 = 0
A. (x - 1) 2 + (y - 2) 2 = 1
B. (x - 1) 2 - (y - 2) 2 = 1
C. (y - 1) 2 - (x - 2) 2 = 1
D. 
- 
= 1
Mathematics
Find the sum.1 + 2 + 3 + ... + 345
A. 119,370 B. 119,025 C. 59685 D. 59340
Mathematics
Use the even-odd properties to find the exact value of the expression. Do not use a calculator.cos 
A. - 
B. 
C. - 
D. 
Mathematics