Mathematics: Determine the dimensions of the screen of a 42-inch tv with a 4: 3 aspect ratio. hint: use 3x^2+4x^2=42^2 to .

Determine the dimensions of the screen of a 42-inch

kanga06

02.01.2022

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:

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

the dimensions of the screen are: 33.6* 25.2

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123iamthe1

14.01.2020

a but its wrong i am sure

Step-by-step explanation:

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