Find the center and the radius of the circle.x2 + y2 - 16x + 8y + 80 = 64
A. (-4, 8); r = 8
B. (-8, 4); r = 64
C. (4, -8); r = 64
D. (8, -4); r = 8
Answer: D
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Use Gaussian elimination or Gauss-Jordan elimination to solve the problem.A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. B requires 1 black, 2 white, and 1 red. C requires 2 black, 1 white, and 2 red. They used 95 black, 100 white and 80 red wires. How many of each cable were made?
A. 15 cable A 20 cable B 15 cable C B. 15 cable A 16 cable B 15 cable C C. 48 cable A 20 cable B 12 cable C D. 20 cable A 15 cable B 15 cable C
Provide an appropriate response.The hundredths position is to the right of the tenths position.
A. True B. False
Use the curve-sketching guideline, to select the graph of the function.
?
?
A. ?
B. ?
C. ?
Solve the quadratic inequality by sketching the graph of the corresponding quadratic function.x2 + 4x - 32 > 0
A. Solution: ?
B. Solution: (-?, -8] ? [4, ?)
C. Solution: (-8, 4)
D. Solution: (-?, -8) ? (4, ?)