Simplify.
+ 
A. 
B. 
C. 
D. 
Answer: C
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Outliers pose a problem for which type of average: mean or mode? Explain why. ?
A. ?The mode; An outlier will shift the mode to a different value. B. The mode; An outlier will decrease the frequency of the already existing mode. C. The mean; An outlier will increase the sum of the data values, thus increasing the mean. D. ?The mean; An outlier will decrease the sum of the data values, thus increasing the mean. E. ?Neither; Outliers do not significantly affect either average.
Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.20, 13 , 6, -1, . . .
A. an = 7n - 27; a20 = 113 B. an = 7n - 20; a20 = 120 C. an = -7n + 20; a20 = -120 D. an = -7n + 27; a20 = -113
Solve the equation graphically. Round to the nearest thousandth.log2
= 7
A. 2.528 B. -2.593, 2.593 C. 2.518 D. 2.584
Multiply.(8 - 8i)(6 + 5i)
A. 88 - 8i B. 88 + 8i C. -40i2 - 8i + 48 D. 8 - 88i