and intersect at point E. If is a right angle, what relationship exists between and

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What will be an ideal response?

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Mathematics

Solve the system of equations using the inverse of the coefficient matrix. 4x - 3y - z = 19x - 6y - 4z = -20 5x + y + z = 45

A. x = 8, y = 4, z = 1 B. x = 8, y = 1, z = 4 C. No solution D. x = -8, y = 4, z = 16

Rewrite the equation in standard form. Find the center or vertex. Identify the conic and sketch the curve.y2 - 18y - x + 83 = 0

A. parabola; vertex (2, 9);
x = (y - 9)² + 2

B. parabola; vertex (2, 9);
x = (y - 9)² + 2

C. parabola; vertex (9, 2);
x = (y - 9)² + 2

D. parabola; vertex (9, 2);
x = (y - 2)² + 9

Write out the sum.

A. 7 + 8 + 9 + ... + (n + 6)2 B. 1 + 2 + 3 + ... + n C. (n + 6)2 D. 49 + 64 + 81 + ... + (n + 6)2

Solve the equation by the square root property. If possible, simplify radicals or rationalize denominators. Express imaginary solutions in the form (x + 5)2 = 14

A. {±}
B. {5 ± }
C.
D. {-5 ± }