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Eddi Din [679]
3 years ago
8

Given x(y + 2) = 3x + y, express y in terms of x.​

Mathematics
1 answer:
vodka [1.7K]3 years ago
6 0

Answer:

y = \frac{x}{x-1}

Step-by-step explanation:

Given

x(y + 2) = 3x + y ← distribute parenthesis on left side

xy + 2x = 3x + y ( subtract 2x from both sides )

xy = x + y ( subtract y from both sides )

xy - y = x ← factor out y from each term on the left side )

y(x - 1) = x ← divide both sides by (x - 1)

y = \frac{x}{x-1}

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Match each number on the left with the correct description of the number on the right.
7nadin3 [17]

Answer:

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5 0
2 years ago
Subtract<br><br>40(-32-40-25)<br>please show how you will do that (step by step)​
sergeinik [125]

Answer:

-3880

Step-by-step explanation:

40(-32-40-25)\\40(-72-25)\\40(-97)\\-3880

Please give brainliest if this answer satisfies your question.

4 0
2 years ago
Write the equation of a line perpendicular to 9xplus7yequals6 that passes through the point ​(9​,negative 7​).
andrew11 [14]

k:\ y=m_1x+b_1\\\\l:\ y=m_2x+b_2\\\\k\ ||\ l\iff m_1=m_2\\\\k\ \perp\ l\iff m_1m_2=-1

We have:

k:\ 9x+7y=6\ \ \ |-9x\\\\7y=-9x+6\ \ \ \ |:7\\\\y=-\dfrac{9}{7}x+\dfrac{6}{9}\to m_1=-\dfrac{9}{7}\\\\l:\ y=m_2x+b\\\\l\ \perp\ k\iff-\dfrac{9}{7}m_2=-1\ \ \ \ |\cdot\left(-\dfrac{7}{9}\right)\\\\m_2=\dfrac{7}{9}\to\ l:\ y=\dfrac{7}{9}x+b

We know. The line <em>l</em> passes throught the point (9, -7). Substitute the coordinates of the poin to the equation of line<em> l </em>:

-7=\dfrac{7}{9}\cdot9+b\\\\-7=7+b\ \ \ \ |-7\\\\b=-14

y=\dfrac{7}{9}x-14\ \ \ \ |\cdot9\\\\9y=7x-126\ \ \ \ |-9y\ |+126\\\\7x-9y=126

Answer: y=\dfrac{7}{9}x-14\to7x-9y=126


7 0
3 years ago
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lakkis [162]

Answer:

The conclusion is that the robber is fast.

Step-by-step explanation:

The first assertion is that if the robber is fast, the police can't catch him. The next information that you get is that they indeed <em>can't </em>catch him, showing that this is the answer.

3 0
2 years ago
Read 2 more answers
PLEASE HELP IM ABOUT TO GO TO SCHOOL AND I NEED TO DO THIS!!!!!
REY [17]
-22.55 i think i used a cal but all u do is subtract the percentage with the number
3 0
2 years ago
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