Determine whether the planes are parallel, perpendicular, or neither. Зх — 18у — 15г - 2 %3D 0 (a) -x+ 6y + 5z – 6 = 0 6x – 2y + z = 1 (b) 7x + 20y – 2z = 2' x- y+ 5z – 2 = 0 (c) 4x + z = 1 >

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A: NOTE: Refresh your page if you can't see any equations. .

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A: topic - differential equations

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