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3 years ago

Plz get me the correct answer or u will be reported. 15 points for correct answer. Thx.

Mathematics

2 answers:

allochka39001 [22]3 years ago

7 0

Answer:

Step-by-step explanation:

correct answer, thanks for 15 pts

Llana [10]3 years ago

6 0

Answer:

Option D is correct

Step-by-step explanation:

Hope it is helpful....

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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)

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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.

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

Calculate the both slope:

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

$m_{AB}\neq m_{CD}$

The line AB and line CD are not parallel

$m_{AB}\cdot m_{CD}=\left(\dfrac{1}{7}\right)\left(-\dfrac{1}{2}\right)=-\dfrac{1}{14}\neq-1$

The line AB and line CD are not perpendicular.

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3 years ago

A commercial jet has been instructed to climb from its present altitude of 6000 feet to a cruising altitude of 30,000 feet. If t

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4 years ago

Becca says that she can use elimination to solve the

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yes i agree with her because elimination method is more simpler and shortest method to solve system of equations.

elimination method use to multiply of both equation in order to balance the variable x or y and then equate them.

example

x+2y=7 .....equation 1

x-3y=14 .......equation 2

so you can multiply equation 1 by -1 in order to equate x and get the value of y by saying equation 1 minus equation 2.

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