Write the expression in the standard form a + bi.(6 + 4i)(6 - 4i)
A. 52
B. 36 - 16i
C. 20
D. 36 - 16i2
Answer: A
Mathematics
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Write a fraction to represent the shaded part of the object.
A. 
B. 
C. 
D. 
Mathematics
Answer the question.The following table gives the electricity usage in kilowatt-hours (kwh) for the Peters family for the first six months of 2001.
What is the average electricity usage for the months January through April?
A. 984.085 kwh B. 978.075 kwh C. 989.065 kwh D. 975.776 kwh
Mathematics
Add and, if possible, simplify.
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics
Divide.
A. 30.5
B. 3.05
C. -60
D. - 
Mathematics