In chemistry the formula of pH is pH=-log[H+] qhere H+ is the concentration of the hydrogen ions. A mixture of acetic acid has a pH of 2.9. Find the concentration of hydrogen ions in the mixture.
What will be an ideal response?
0.00125
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Find the probability.Two 6-sided dice are rolled. What is the probability that the sum of the two numbers on the dice will be greater than 10?
A. 
B. 
C. 3
D. 
Find the sum.-20 - 4 - 
- 
- . . .
A. 5
B. - 25
C. - 
D. Does not exist
Solve the problem.Mario's front patio is in the shape of a trapezoid with a height of 58 feet. The longer base is 9 feet longer than the shorter base, and the area of the patio is 5800 square feet. Find the length of each base of the trapezoidal patio.
A. 95.5 feet; 95.5 feet B. 191 feet; 209 feet C. 95.5 feet; 104.5 feet D. 45.5 feet; 54.5 feet
Find the partial derivative.Let z = f(x, y) = 5(x + 4y - 4)2. Find 
.
A. 40x + 160y - 160 B. 20x + 80y C. 40x + 160y + 160 D. 20x + 80y - 80