Subtract. Simplify, if possible.20
- 
A. 20
B. 18
C. 19
D. 19
Answer: D
Mathematics
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Find the product. Write the answer in standard form.(6 + 8i)(6 - 8i)
A. -28 B. 100 C. 36 + 64i2 D. 36 - 64i2
Mathematics
Simplify the complex rational expression.
A. 
B. 
C. 
D. 
Mathematics
Find the vertical asymptote(s), if any, of the graph of the rational function. f(x) = 
A. x = 1, x = -1 B. x = 6 C. x = -6 D. no vertical asymptote
Mathematics
Solve the problem.A boat moves 7 kilometers upstream in the same amount of time it moves 20 kilometers downstream. If the rate of the current is 5 kilometers per hour, find the rate of the boat in still water.
A. 5 km/hr
B. 2
km/hr
C. 10
km/hr
D. 10
km/hr
Mathematics