Use Venn diagrams to determine whether the following statements are equal for all sets A and B.B ? (A ? C), (B ? A) ? (B ? C)
A. equal
B. not equal
Answer: A
Mathematics
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Solve.In chemistry, the pH of a substance is defined by 
where 
is the hydrogen ion concentration in moles per liter. Find the 
of a sample of lake water whose 
is 
moles per liter. (Round to the nearest tenth.)
A. 6.4 B. 7.3 C. 10.1 D. 8.5
Mathematics
A value of sinh x or cosh x is given. Use the definitions and the identity 
to find the value of the other indicated hyperbolic function.sinh x = 
, tanh x =
A. 
B. 
C. 
D. - 
Mathematics
Solve the inequalities
Mathematics
Fill in the blank with one of the words or phrases listed below.
The position of each digit in a number determines its 
.
A. place value B. dividend C. square root D. sum
Mathematics