Write the expression in the standard form a + bi.(5 - 9i) + (4 + 6i)
A. 1 + 15i
B. -9 + 3i
C. 9 + 3i
D. 9 - 3i
Answer: D
Mathematics
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Find the limit.
A. -5 B. 5 C. 7 D. Does not exist
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Solve the problem.Jim has gotten scores of 60 and 97 on his first two tests. What score must he get on his third test to keep an average of 85 or better?
A. at least 80 B. at least 96 C. at least 98 D. at least 78.5
Mathematics
Solve the proportion for the given variable. 
= 
A. 3
B. 4
C. 30
D. 24
Mathematics
Tell whether the angle is acute, right, obtuse, or straight.
A. Acute B. Straight C. Obtuse D. Right
Mathematics