Determine if AB and CD are parallel, perpendicular, or neither. A(-11, 5), B (-8, 4), C (8, –7), D(-1, –4)
A Parallel
B Perpendicular
C Neither

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step-by-step explanation:

the answer is 89 d

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"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629

answer: a.12cm

step-by-step explanation: