Divide and simplify to the form a + bi.
A. 
+ 
i
B. 
- 
i
C. 
- 
i
D. 
- 
i
Answer: C
Mathematics
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For the compound inequality, give the solution set in both interval and graph forms.4x - 1 ? -13 and 4x - 1 ? 3
A. [-3, 1]
B. (-3, 1]
C. (-3, 1)
D. [-3, 1)
Mathematics
Factor completely. If the polynomial is prime, state so.x2 + 18x + 81
A. (x + 9)(x - 9) B. (x - 9)2 C. prime D. (x + 9)2
Mathematics
Find the exact value of the expression.sin
A. 
B. - 
C. 
D. 
Mathematics
Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = 3-xy = - 
A. (1, 3) B. ? C. (-1, 3) D. (1, -3)
Mathematics