3 years ago

Which variable will you choose to eliminate? How?

Mathematics

1 answer:

Inga [223]3 years ago

4 0

Answer:

Variable elimination

8x+3y=-7
3y=-8x-7
y=-8/3x-7/3

Now plug it into y
7x-16/3x-14/3=-3
5/3x-14/3=-3
5/3x=5/3
x=1

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Determine the slope of the line that contains the points A(0, 2) and B(7,3). *

IgorC [24]

<h3>Given points:-</h3>

A (0,2)
B (7,3)

We know that

${\boxed{\sf Slope_{(m)}=\dfrac {y_2-y_1}{x_2-x_1}}}$

Substitute the values

$\qquad\quad {:}\longrightarrow\tt m=\dfrac {3-2}{7-0}$

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Arturiano [62]

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Step-by-step explanation:

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Mamont248 [21]

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Hope it helps

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3 years ago

If x is directly proportional to to y and x= 200 and y=3 find x when y=5

Amiraneli [1.4K]

Answer:

333.33

Step-by-step explanation:

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k=y/x

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now,

when y =5

y=kx

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2 years ago

WE has endpoints at W(10, 2) and E(5, -3). How long is WE?

s2008m [1.1K]

Answer:

$WE=5\sqrt{2}$

Step-by-step explanation:

Distance between two points:

The distance between $(x_1,y_1)$ and $(x_2,y_2)$ is given by $=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2$

Hence distance between $W(10,2)$ and $E(5,-3)$

$WE=\sqrt{(5-10)^2+(-3-2)^2}=\sqrt{(-5)^2+(-5)^2}=\sqrt{25+25}\\\\WE=\sqrt{50}=5\sqrt{2}$

8 0

3 years ago