Solve the problem. Round your answer to the nearest tenth, when appropriate. Use the formula 
, as needed.Find [H3O+] if the pH = 6.
A. 1.0 × 10-6
B. 2.0 × 106
C. 1.0 × 106
D. 3.0 × 10-6
Answer: A
Mathematics
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Solve the problem.The square root expression Rf
gives the aging rate of an astronaut relative to the aging rate of a friend on Earth, Rf, where v is the astronaut's speed and c is the speed of light. An astronaut is moving at 60% of the speed of light. Substitute 0.6c in the expression above. What is his aging rate, correct to two decimal places if necessary, relative to a friend on Earth?
A. 0.63Rf B. 0.8Rf C. 0.8 D. 1.17Rf
Mathematics
Write the expression in the standard form a + bi.If z = 6 - 2i, evaluate z + 
.
A. 12 + 4i B. -4i C. 12 D. 12 - 4i
Mathematics
Find the square root.
A. - 6
B. Not a real number
C. 
D. - 
Mathematics
Solve the equation.2 ln 4x = 12
A. 
B. {e6}
C. 
D. 
Mathematics