Find the standard deviation. Round to one more place than the data.293, 171, 151, 127, 181, 265, 111, 129, 136
A. 68.3
B. 60.3
C. 63.9
D. 21.7
Answer: C
Mathematics
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Find the real or imaginary solutions by completing the square.z2 + 12z + 25 = 0
A. {6 + 
}
B. {-12 + 
}
C. {6 ± 
}
D. {-6 ± 
}
Mathematics
Solve the problem.The number of periods needed to double an investment when a lump sum is invested at 2%, compounded semiannually, is given by n = log1.01 2. Use the change of base formula to find n, rounded to the nearest tenth.
A. 65.7 periods B. 74.7 periods C. 69.7 periods D. 72.7 periods
Mathematics
Combine like terms whenever possible. Write the result with descending powers.15a6 - 15a6 + 7a5 + 15a6 - 11a5
A. 15a6 - 4a5 B. 11a11 C. 11a6 D. Cannot be simplified
Mathematics
Find all values of a for which f(a) is the indicated value.f(x) = 15x - 
; f(a) = 1
A. - 
, 
B. - 
, 
C. - 
, 
D. - 
, 
Mathematics