How many subsets and proper subsets are in the given set?
A. 127, 126
B. 128, 129
C. 64, 65
D. 128, 127
Answer: D
Mathematics
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Perform the addition or subtraction and give your answer in Hindu-Arabic form.
A. 7509 B. 8599 C. 8509 D. 7599
Mathematics
Determine the natural logarithm of the number. Round to the nearest ten-thousandth.0.000202
A. -3.6946 B. 3.6946 C. 8.5072 D. -8.5072
Mathematics
Find all real numbers that satisfy the equation.2 cos x - 1 = 0
A. x = 
+ n? or x = 
+ n?
B. x = 
+ n? or x = 
+ n?
C. x = 
+ 2n? or x = 
+ 2n?
D. x = 
+ 2n? or x = 
+ 2n?
Mathematics
Perform the indicated operations and simplify the result. Leave the numerator and denominator in your answer in factored form.
A. 18 B. 2x C. x2 D. -18
Mathematics