Perform the indicated operation. Write your result in a + bi form.(5 + 3i)(3 - 9i)
A. -12 + 54i
B. 42 + 36i
C. -27i2 - 36i + 15
D. 42 - 36i
Answer: D
You might also like to view...
Use a calculator to find a decimal approximation for the indicated function values. Round your answer to four decimal places.sec 1.607
A. -0.0362 B. -27.6094 C. 0.9993 D. -27.6275
Find the distance between the planes.
 Figure 3.png)
Solve the problem.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 2 m down from the top of the dome the ceiling is 24 m wide, find the best location for the light source.
A. 54 m down from the top B. 72 m down from the top C. 36 m down from the top D. 18 m down from the top
Perform the indicated operation. Write the answer in scientific notation.(8.64 × 10-4)(8.43 × 10-4)
A. 7.28 × 10-7 B. 7.28 × 1016 C. 7.3 × 10-7 D. 7.3 × 1016