Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
A. -3
B. 3
C. -11
D. 11
Answer: B
Mathematics
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Which of the following is not true? ?
A. ?A Straight angle has a measure of 180?. B. ?Complementary angles have measures that add up to 180?. C. ?Supplementary angles have measures that add up to 90?. D. ?Complementary angles have measures that add up to 90?. E. ?ARight angle is 90?.
Mathematics
Sketch the line with the given slope and y-intercept.m = 
, (0, 4)
A. 
B. 
C. 
D. 
Mathematics
These triangles are similar. Find the missing length.
A. 6 B. 8 C. 7 D. 5
Mathematics
Divide the expression. You may want to use the property 
= 
+ 
. Do not use a calculator.
A. 
x2 - 8
B. 3x - 1
C. 
x - 
D. 3x - 8
Mathematics