Use a system of equations to solve problem.Find the equation of the circle, written in the form x2 + y2 + ax + by +c = 0, that passes through the points (7, 6), (2, 1), and 
A. x2 + y2 + 4x + 12y + 15 = 0
B. x2 + y2 - 4x - 12y + 4 = 0
C. x2 + y2 - 4x - 12y + 15 = 0
D. x2 + y2 - 2x - 6y + 15 = 0
Answer: C
Mathematics
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Decide whether the set is countably infinite. Answer yes or no. ? Set of even numbers.
What will be an ideal response?
Mathematics
Evaluate the expression for the given value or values.xy, for x = -8, y = -7
A. 
B. -56
C. 15
D. 56
Mathematics
Identify the given number as "Rational", "Irrational", or "Not a real number". If the number is rational, give its exact value. If the number is irrational, give a decimal approximation to the nearest thousandth.
A. Rational, 5 B. Not a real number C. Rational, 12.500 D. Irrational, 12.500
Mathematics
Identify the radicand.s2t
A. (s2t)
B. 
C. 
D. s2t
Mathematics