Add the given pair of complex numbers geometrically.z1 = 4 + 12i, z2 = -3i
A. 4 + 15i
B. 4 + 36i
C. 4 - 36i
D. 4 + 9i
Answer: D
Mathematics
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A. - 
B. - 
C. 
D. 
Mathematics
Use scientific notation to solve the problem.The distance from the earth to the sun is 92,900,000 miles. How long would it take a rocket, traveling at 2.9 × 103 miles per hour, to reach the sun?
A. 3.2 × 103 hr B. 3.2 × 104 hr C. 3.2 × 102 hr D. 3.2 hr
Mathematics
Evaluate the radical expressions or indicate that the root is not a real number.
A. 27 B. 3 C. -3 D. not a real number
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Divide and simplify.
÷ 
A. 
B. 
C. 16x
D. 
Mathematics