Write the number in scientific notation as it would be displayed on a calculator.164
A. 1.64E3
B. 1.64E1
C. 1.64E2
D. 1.64E-2
Answer: C
Mathematics
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f(x)
A. 2 B. -2 C. does not exist D. 0
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Simplify.(x5)-3
A. x15
B. x8
C. 
D. 
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Find the mean for the given frequency distribution.
A. 24.7 B. 26.3 C. 25.5 D. 1.9
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Solve the problem.The hydrogen ion concentration of a substance is about 8.7 × 10-7 moles per liter. Find the pH. Round to the nearest tenth. Use the formula pH = -log [H+].
A. 6.5 B. -7.9 C. 6.1 D. 7.9
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