Find the exact value of the expression.
A. - 
B. - 
C. -2
D. -
Answer: D
Mathematics
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An acid solution has a pH of 2.3. Find the hydrogen ion concentration of this solution.
A. 5.01 mol/L [H+] B. 5.01 × 10-3 mol/L [H+] C. 2.00 × 10-12 mol/L [H+] D. 2.3 mol/L [H+]
Mathematics
Add.81439098
A. 20,265 B. 21,265 C. 21,055 D. 21,244
Mathematics
Graph the parabola and label the vertex. Find the x-intercept.x = 
y2 + 1
A. vertex (1, 0), x-intercept (1, 0)
B. vertex (1, 0), x-intercept (1, 0)
C. vertex (- 1, 0), x-intercept (- 1, 0)
D. vertex (- 1, 0), x-intercept (- 1, 0)
Mathematics
Find an equation for the parabola described.Focus at (8, 0)
A. y2 = 8x B. x2 = 32y C. y2 = 32x D. y2 = -32x
Mathematics