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adell [148]
3 years ago
11

Y varies inversely with x. When x = 3 then y = 5. Write an equation to represent this relationship.

Mathematics
2 answers:
Colt1911 [192]3 years ago
8 0

Answer:

Step-by-step explanation:

y ∞ 1/x

y = k/x

Where k is the constant of proportionality

When x = 3 and y = 5

5 = k/3

Cross multiply

k = 5×3

k = 15

The equation is y = 15/x

slavikrds [6]3 years ago
4 0

Answer:

X=6

Step-by-step explanation:

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Important:
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First, look at the left triangle alone.
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That leaves (180° - 104° ) = 76° degrees for the third angle.
The third angle in that triangle is 'x'. 
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'x' and 'z' are a "linear pair".
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Now look at the the skinny triangle on the right alone.
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Answer:

<em></em>\left[\begin{array}{ccc}2&-6&2\\0&3&-2\\0&2&2\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right]= \left[\begin{array}{ccc}1\\-5\\-3\end{array}\right]<em></em>

Step-by-step explanation:

Given system of equations are

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given

2 x - 6 y - 2 z = 1

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<em>The Matrix form of the given system of equations </em>

<em>A X = B</em>

<em></em>\left[\begin{array}{ccc}2&-6&2\\0&3&-2\\0&2&2\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right]= \left[\begin{array}{ccc}1\\-5\\-3\end{array}\right]<em></em>

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Answer:

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