Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.11
- 5
A. 6
B. 6
C. 16
D. 6
Answer: B
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Find 
. Write the answer in polar form with the argument between 0° and 360°z1 = 1 + i, z2 = 
+ i
A. (
- 2)(cos 15° + i sin 15°)
B. cos 75° + i sin 75°
C. 
(cos 15° + i sin 15°)
D. 
(cos 75° + i sin 75°)
Solve.The volume of wood in a tree varies jointly as the height of the tree and the square of the distance around the tree trunk. If the volume of wood is src="https://sciemce.com/media/4/ppg__10702191931__f1q84g5.jpg" alt="" style="vertical-align: -4.0px;" /> around the trunk?
A. 63 cubic feet
B. 54 cubic feet
C. 58 cubic feet
D. 46 cubic feet
when the height is 
and the distance around the trunk is 
what is the volume of wood obtained from a tree that is 
tall having a measurement of
Use the change of base formula and your calculator to approximate the logarithm.log7 
A. 0.8824 B. 0.5667 C. 0.2833 D. 1.7647
Write the quotient in the standard form.
A. 
- 
i
B. 
+ 
i
C. 
- 
i
D. 
+ 
i