Write the standard form of the equation of the circle with radius r and center (h, k).r = 4; (h, k) = (-1, 10)
A. (x - 1)2 + (y + 10)2 = 16
B. (x + 1)2 + (y - 10)2 = 16
C. (x + 1)2 + (y - 10)2 = 4
D. (x - 1)2 + (y + 10)2 = 4
Answer: B
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A. not valid B. valid
Determine if the given solution is correct. If it is not, find the solution.Is 14 the solution to -11 + x = 4?
A. no; x = -7 B. no; x = -15 C. no; x = 15 D. yes
Solve the system by elimination. If the system is inconsistent or dependent, say so.
A. (7, 8) B. (-7, 7) C. (-8, 8) D. empty set solution; inconsistent system
Factor when possible.15x2 - 15
A. 15(x - 1)2 B. 15(x + 1)(x - 1) C. 15(x + 1)2 D. prime