Multiply. Write the result in the form a + bi.(6 - 9i)(2 + 4i)
A. 48 - 6i
B. 48 + 6i
C. -24 - 42i
D. -36i2 + 6i + 12
Answer: B
Mathematics
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Solve the problem.A pulley rotates through 57° in one minute. How many rotations (to the nearest tenth of a rotation) does the pulley make in an hour?
A. 171.0 rotations B. 19.0 rotations C. 342.0 rotations D. 9.5 rotations
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Perform the operation. Write the answer as a fraction in lowest terms.3
÷ 4
A. 
B. 
C. 
D. 
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Graph the parabola.x = y2 - 4
A. 
B. 
C. 
D. 
Mathematics
Find the limit algebraically.
A. 1
B. 0
C. 
D. Does not exist
Mathematics