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Marina CMI [18]
3 years ago
13

How can you use a formula for one measurement to write a formula for a different measurement?

Mathematics
1 answer:
Dmitrij [34]3 years ago
3 0

Answer:

Write the formula for one measurement, then solve the formula for the different measurement you want to find and use this new formula to find that measurement.

Step-by-step explanation:

 We can understand this through an example.

If we need to find the lenght of a rectangle whose width is 4 feet and whose perimeter is 28 feet, we can use a formula for one measurement to write a formula for a different measurement:

 - We need to write the formula for the perimeter of a rectangle:

P=2l+2w

Where "l" is the lenght and "w" is the width.

- Since we know the width and the perimeter of the rectangle and we need to find the lenght, we can solve for "l":

P=2l+2w\\\\P-2w=2l\\\\l=\frac{P-2w}{2}

Now we get a new formula for calculate a differente measurement (the lenght of the rectangle).

- Substituting values, we get:

l=\frac{28ft-2(4ft)}{2}=10\ ft

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Find g(4x)<br> g(x)=x²-4
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Answer:

g(x) = x² - 4 is already in form of a variable, I.e., x

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Same as before, 4x takes over x:

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  • <em>(</em><em>ax</em><em>)</em><em>²</em><em> </em><em>=</em><em> </em><em>a</em><em>²</em><em>x</em><em>²</em><em>,</em><em> </em><em>where</em><em> </em><em>a</em><em> </em><em>is</em><em> </em><em>some</em><em> </em><em>arbitrary</em><em> </em><em>constant</em><em>.</em><em> </em>

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The school that Stefan goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 3 se
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Answer: the price of a senior citizen's ticket is $8.

the price of a child's ticket is $14

Step-by-step explanation:

Let x represent the price of a senior citizen's ticket.

Let y represent the price of a child's ticket.

On the first day of ticket sales, the school sold 3 senior citizen tickets and 1 child ticket for a total of $38. It means that

3x + y = 38- - - - - - - - - - - -1

The school took in $52 on the second day by selling 3 senior citizen and 2 child tickets. It means that

3x + 2y = 52- - - - - - - - - - - -2

Subtracting equation 2 from equation 1, it becomes

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6 0
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Identify the percent of change as an increase or decrease 38 staples to 55 staples find the percent of change round to the neare
erik [133]

Answer:

The percent of change is 44.7%

Step-by-step explanation:

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Hence,

The percent of change is 44.7%

6 0
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