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nydimaria [60]
3 years ago
8

Help me out here please.

Mathematics
1 answer:
Vilka [71]3 years ago
5 0

Answer:

just remove the parentheses and add the numbers

Step-by-step explanation:

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Determine the dimensions of the screen of a 42-inch TV with a 4:3 aspect ratio.
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For this case, the first thing you should do is know that the measurement of a television is given by the diagonal of the television.

Therefore, to find the value of x, we use the Pythagorean theorem.

We have then:

(3x)^2+(4x)^2=42^2

Rewriting we have:

25x ^ 2 = 1764\\x = \sqrt {\frac {1764} {25}}\\x = \sqrt {70.59}\\x = 8.4

Then the dimensions are given by:

4x = (4 * 8.4) = 33.6\\3x = (3 * 8.4) = 25.2

Answer:

the dimensions of the screen are: 33.6* 25.2

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3 years ago
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x^3

Step-by-step explanation:

It stays the same.

Hope this helps.

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The graph models a rock being thrown. What is the interval of decrease?
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Please answer this correctly beacause i dont understand the questions
Kruka [31]

Answer:

Fraction means how much from the main graph is it taking, for example, the circle is a 1/4 white 3/4 green to find the decimal, divide the number under the line by the one above it, 4 divided by 3 for example

Step-by-step explanation:

Fraction means how much from the main graph is it taking, for example, the circle is a 1/4 white 3/4 green to find the decimal, divide the number under the line by the one above it, 4 divided by 3 for example

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