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Wittaler [7]
4 years ago
15

Y=4-3x÷x-5 Make X the subject

Mathematics
2 answers:
anyanavicka [17]4 years ago
5 0

x = \frac{(4 + 5y)}{(y + 3)}

multiply both sides by (x - 5)

y(x - 5) = 4 - 3x

xy - 5y = 4 - 3x

collect terms in x on the left side of the equation and other terms on the right side.

add 3x to both sides

xy + 3x - 5 y = 4

add 5y to both sides

xy + 3x = 4 + 5y

take out x as a common factor on the left side

x(y + 3) = 4 + 5y

divide both sides by (y + 3)

x = \frac{(4 + 5y)}{(y + 3)}


jeka944 years ago
4 0
Cross Multiply by 'x - 5'
Hence
y(x - 5) = 4 -3x
xy - 5y = 4 - 3x

Move all the terms containing an 'x' to one side of the equals and all the others to the opposite side.
xy + 3x = 4 + 5y
Factor out 'x'
x(y + 3) = 4 + 5y
'Cross' divide by 'y + 3'
x = ( 4 + 5y) / (y + 3 )

'x' is now the subject.
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Answer:

The estimate of the percentage of millionaires in each of these cities:

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Percentage of

Millionaires             9%                 12%              9%                 8.3%

Step-by-step explanation:

Data and Calculations:                            City

                            Bridgeport,     San Jose,   Washington,   Lexington Park,

Millionaire                   CT                 CA              D.C.                 MD

Yes                             45                  36               36                    33

No                              455               264             364                 367

Sample                      500               300             400                 400

Percentage of

 Millionaires            45/500         36/300         36/400           33/400

=                               0.09               0.12             0.09            0.0825

=                                 9%                 12%              9%               8.3%

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Answer:

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Step-by-step explanation:

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gulaghasi [49]

Answer:

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Step-by-step explanation:

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Other options:

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