Write the expression in the standard form a + bi.If z = 6 - 9i, evaluate z
.
A. 36 - 81i2
B. 117
C. 36 - 81i
D. -45
Answer: B
Mathematics
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Graph the exponential function.y = 3x
A. 
B. 
C. 
D. 
Mathematics
Solve the equation for x if 
. Give your answer in radians using exact values only.
?
What will be an ideal response?
Mathematics
Classify the system as consistent or inconsistent, and dependent or independent.3x - 9y = 6y = 
x - 
A. Inconsistent and dependent B. Inconsistent and independent C. Consistent and independent D. Consistent and dependent
Mathematics
Solve. If necessary, round answers to the nearest hundredth.15 students were asked how much cash they had with them and the results were recorded.27, 30, 20, 15, 0, 5, 2, 50, 105, 25, 20, 75, 55, 13, 16How many students had less cash than the mean?
A. 10 B. 4 C. 8 D. 11
Mathematics