Simplify. Write your answer in the form a + bi, where a and b are real numbers.(5 - 4i) + (1 + 8i)
A. -6 - 4i
B. 6 - 4i
C. -6 + 4i
D. 6 + 4i
Answer: D
Mathematics
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Insert < or > to make the statement true.-
___ -
A. -
> -
B. -
< -
Mathematics
Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.cos 3x cos x + sin 3x sin x = 0
A. 
, 
, 
, 
B. 
, 
C. 
D. 
, 
, 
Mathematics
Find the slope of the line with the given inclination. Round your answer to the nearest thousandth, if necessary.32.0°
A. -0.625 B. 1.600 C. -1.600 D. 0.625
Mathematics
Solve the problems.Approximately 23.3% of all students at a city college commute to school. Write this percent as a fraction or mixed number in simplest form.
A. 
B. 2
C. 23
D. 
Mathematics