Multiply.5i(2 - 8i)
A. 10i - 40i2
B. 40 + 10i
C. 10i - 40
D. 10i + 40i2
Answer: B
Mathematics
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Solve the quadratic inequality by any method. Write your answer in interval notation.x2 - 3x - 10 < 0
A. (5, ?) B. (-?, -5) C. (-2, 5) D. (-?, -2)
Mathematics
The graph of a one-to-one function f is given. Sketch the graph of the inverse function f-1, on the same set of axes. Use a dashed line for the inverse.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.How much pure acid should be mixed with 9 gallons of a 50% acid solution in order to get an 80% acid solution?
A. 13.5 gal B. 36 gal C. 4.5 gal D. 22.5 gal
Mathematics
Write a formula for the general term, or nth term, for the given sequence.
, 
, 
, 
, 
, . . .
A. an = 
B. an = 
C. an = 
D. an = 
Mathematics