Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Answer: C
Mathematics
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Solve for x: log x = -5.
A. 10,000 B. -0.00001 C. 0.00001 D. can't be done
Mathematics
Find the product.
? 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.When 40% of a number is added to the number, the result is 168. What is the number?
A. 140 B. 29 C. 120 D. 48
Mathematics
Use the rational zeros theorem to determine the potential rational zeros of the polynomial function. Do not find the zeros.f(x) = x5 - 5x2 + 2x + 21
A. ± 1, ± 7, ± 3, ± 21
B. ± 1, ± 
, ± 
, ± 
C. ± 1, ± 7, ± 3
D. ± 1, ± 
, ± 
, ± 
, ± 7, ± 3, ± 21
Mathematics