Solve the problem. When appropriate, round the solution to the nearest tenth. As needed, use the formula 
Find the pH if the [H3O+] = 5.1 × 10-8.
A. 8.3
B. 7.7
C. 7.3
D. 8.7
Answer: C
Mathematics
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Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions exist.x2 + 7x - 6 = 0
A. One real solution B. Two different real-number solutions C. Two different imaginary-number solutions
Mathematics
Multiply the following numbers:
a. (6a)(4a2b) b. (3x)(12xy2) c. (7abc)(2a2b-2c) d. (6x-1y)(2yz)(4xz)
Mathematics
Find the exact value.log 103
A. 3 B. 10 C. 103 D. log 3
Mathematics
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.2x + 2y + z = -63x - 5y - z = -223x + y + 5z = -4
A. (-5, 1, 2) B. (2, 1, -5) C. (-5, 2, 1) D. No solution
Mathematics