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marysya [2.9K]
3 years ago
13

Solve the formula Ax+By = C for A.

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0

Answer:

A = \frac{C - By}{x}

Step-by-step explanation:

Given

Ax + By = C

Required

Solve for A

The question implies that we make A the subject of the formula.

Start by subtracting By from both sides of the equation by x

Ax + By - By= C - By

Ax = C - By

Divide both sides by x

\frac{Ax}{x} = \frac{C - By}{x}

A = \frac{C - By}{x}

<em>Solved</em>

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First you divide 20 by 14. Doing this will give you the cost of a ride per ticket.

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Then you do the same thing to 30 and 22.50.

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Answer:(a) getting the equation:

We'll assume that the altitude is represented by the x-axis and that the boiling point is represented by the y-axis.

Therefore, we have two given points:

(8400 , 200.4) and (4200 , 206.7)

Since the relation is linear, therefore, the graph forms of straight line with the general equation:

y = mx + c where m is the slope and c is the y-intercept.

First, we will calculate the slope:

m = (y2-y1) / (x2-x1) = (206.7 - 200.4) / (4200 - 8400) = -0.0015

Therefore, the equation of the line now is:

y = -0.0015x + c

Then, we will need to calculate the y-intercept. In order to do so, we will use any give point and substitute in the previously obtained equation as follows:

y = -0.0015x + c

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Based on the above calculations, the equation of the line is:

y = -0.0015x + 213

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Now, in order to calculate the boiling point at altitude 2100, we will substitute in the equation of the line as follows:

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Step-by-step explanation:

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