4 years ago

15-4i divided by 3i, it's algebra 2 .

Mathematics

1 answer:

Vanyuwa [196]4 years ago

4 0

Answer:

13.6666666667

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Which expression represents the phrase, "one fifth the sum of 14 and a number"?

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Determine whether line AB and line CD are parallel, perpendicular, or neither. A( 4, 2), B(-3, 1), C(6, 0), D(-10, 8)

Lapatulllka [165]

Answer:

<h2>neither</h2>

Step-by-step explanation:

If AB an CD are parallel, then their slopes are the same.

If AB and CD are perpendicular, then the product of their slopes is equal -1.

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Calculate the both slope:

$A(4,\ 2),\ B(-3,\ 1)\\\\m_{AB}=\dfrac{1-2}{-3-4}=\dfrac{-1}{-7}=\dfrac{1}{7}\\\\C(6,\ 0),\ D(-10,\ 8)\\\\m_{CD}=\dfrac{8-0}{-10-6}=\dfrac{8}{-16}=-\dfrac{1}{2}\\\\=============================$

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The line AB and line CD are not parallel

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The line AB and line CD are not perpendicular.

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Answer:

$1)m = 5 \\ 2)y = 26$

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