Use the following information. Chemists use the pH (hydrogen potential) of a solution to measure its acidity or basicity. The pH is given by the formula
, where
is the concentration of hydrogen ions in moles per liter. What value of
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?
A.
B.
C.
D.
E.
Answer: D
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Draw a valid conclusion from the given premises.It is either day or night. If it is daytime, then the squirrels are scurrying. It is not nighttime.Therefore....
A. Squirrels do not scurry during the day. B. The squirrels are scurrying. C. The squirrels are not scurrying. D. Squirrels do not scurry at night.
The circle graph shows the results of the student council presidential election and the percent of the vote each person received.How many votes did Lili get?
A. 128 B. 108 C. 64 D. 100
Solve the system by the addition method. 2x + 10y = -5610x + 2y = 56
A. {(-7, 7)} B. {(-2, 7)} C. {(7, -7)} D. {(10, -10)}
For the given function f(x), find f-1(x). State the domain of f-1(x).f(x) = (x + 16)2 - 5 (x ? -16)
A. f-1(x) = 5x2 + 16, x ? 0
B. f-1(x) = + 5, x ? -16
C. f-1(x) = - 16, x ? -5
D. f-1(x) = + 16, x ? 5