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seropon [69]
1 year ago
12

Urgent help needed. Will mark you brainlest when correct

Mathematics
1 answer:
posledela1 year ago
7 0

Question 7: Option (4)

A=(3/8)^2=\frac{9}{64}

Question 8: Option (3)

A=\frac{1}{2}(17)(9)=76.5

Question 9: Option (2)

A=\pi(10)^2 \approx 314

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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:

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Rewriting we have:

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

Then the dimensions are given by:

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Answer:

the dimensions of the screen are: 33.6* 25.2

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18.1 is the answer. I am glad I could help.



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