Solve.The formula for the pH of a solution is given by the logarithmic equation pH = -log [H+], where [H+] is the concentration of hydrogen ions. The concentration of hydrogen ions of a specific solution is 10-6. Calculate the pH of this solution.
A. 6
B. -6
C. 5.8
D. -6.3
Answer: A
Mathematics
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Provide an appropriate response.A number rounded to the nearest thousand is 89,000. What is the largest whole number this could have been before rounding?
A. 89,999 B. 89,500 C. 89,499 D. 88,999
Mathematics
Find a polynomial of least degree with only real coefficients and having the given zeros.1 - 
, 1 + 
, and 1 + i
A. f(x) = x4 + 6x3 + 4x2 - 4 B. f(x) = x4 - 6x3 + 8x2 - 4 C. f(x) = x4 + 3x3 + 4x2 - 1 D. f(x) = x4 - 4x3 + 4x2 - 4
Mathematics
Translate the verbal phrase into a mathematical expression. Use x to represent the unknown number.Twice some number
A. 2 + x
B. 
C. 2 - x
D. 2x
Mathematics
Find the LCM of the given numbers.3, 9, 15
A. 135 B. 45 C. 15 D. 9
Mathematics