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 hydrogen ion concentration if the 
A. 3.98 × 10-10
B. 2.51 × 10-10
C. 3.98 × 10-9
D. 2.51 × 10-9
Answer: A
Mathematics
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Write the number as a binary number.76038
A. 111,110,000,0102 B. 111,110,000,0112 C. 100,001,111,1012 D. 100,001,111,1002
Mathematics
Solve the problem by integration.An architect designs a wall panel that can be described by the first-quadrant area bounded by 
and 
If the area of the panel is 
find the 
(in m) of the centroid of the panel.
A. 0.0358 m B. 1.43 m C. 0.717 m D. 10.5 m
Mathematics
Provide an appropriate response.Perform the operation and express in scientific notation. 
2
What will be an ideal response?
Mathematics
Solve.(r + 3)2 = 13
A. 3 + 
, 3 - 
B. 
, -
C. -3 + 
, -3 - 
D. 10
Mathematics