Represent the circuit with a logical form.
A. (p ? r) ? (q ? ~r)
B. (p ? r) ? (q ? ~r)
C. (p ? r) ? (q ? ~r)
D. (p ? r) ? (q ? ~r)
Answer: B
Mathematics
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Convert the given number to scientific notation.1,086,000,000,000,000,000
A. 1.086 × 1018 B. 1086 × 1015 C. 1.086 × 10-18 D. 1086 × 10-15
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Evaluate the expression.2 ? 9 - 7
A. 25 B. 4 C. 126 D. 11
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Find the equation of the parabola whose vertex and focus are shown.
A. (y - 4)2 = -20(x - 3) B. (x - 4)2 = -20(y - 3) C. (y - 4)2 = 20(x - 3) D. (x - 4)2 = 20(y - 3)
Mathematics
Provide an appropriate response.Determine: 
What will be an ideal response?
Mathematics