Add. Write your answer in lowest terms.
A. 1
B. 
C. 
D. 1
Answer: A
Mathematics
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Perform the indicated operation. Write the answer in standard form.(-5 + 4i)(2 + i)
A. -6 - 13i B. -14 - 13i C. -6 + 3i D. -14 + 3i
Mathematics
Solve the problem.John has received scores of 85, 88, 87, and 80 on her algebra tests. What is the minimum score he must receive on the fifth test to have an overall test score average of at least 82? (Hint: The average of a list of numbers is their sum divided by the number of numbers in the list.)
A. 69 B. 70 C. 71 D. 68
Mathematics
Find all cube roots of the complex number. Leave answers in trigonometric form.2 + 2i
A. 
cis 20°, 
cis 140°, 
cis 260°
B. 
cis 20°, 
cis 140°, 
cis 260°
C. 
cis 30°, 
cis 150°, 
cis 270°
D. 
cis 20°, 
cis 140°, 
cis 260°
Mathematics
Graph the solution of the system.
A. 
B. 
C. 
D. 
Mathematics