anonymous
  • anonymous
HELP FOR GOD'S SAKE PLEASE!! 'A standard 27 inch analog tv screen as an aspect ratio of 4:3. Use proportions and the Pythagorean theorem to calculate the lengths and widths of the screen in inches.
Mathematics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
pythagorean thearam is horrible :P and I love the way you started this question lmao!
anonymous
  • anonymous
i know the answer my teacher just wants the work.
anonymous
  • anonymous
Just set up your right triangles. For the analog TV, the hypotenuse is 27 in, the length (l) = 4x, and the width (w) = 3x. This sets up your 4:3 aspect ratio. For the digital TV, the hypotenuse is again 27 in, the length (l) = 16x, and the width = 9x. This will provide you with the x value for each TV so you can figure out the length and width of each.

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More answers

anonymous
  • anonymous
If the ratio is 4:3 for the sides, then when you consider the triangle formed by adding the diagonal, you have two sides 3 and 4, meaning the hypotenuse (diagonal) is what?
anonymous
  • anonymous
27
anonymous
  • anonymous
An interesting triangle in which the hypotenuse is longer than the sum of the other sides. Do you know what the Pythagoran Theorem says?
anonymous
  • anonymous
well the answer to the problem is: 21.6in. by 16.2in. but I have to show the work and I tried almost everything!
anonymous
  • anonymous
Follow my method (: I'll let the rest of you all handle this. Peace! XD
anonymous
  • anonymous
noooo please help!!!
anonymous
  • anonymous
If you prefer, the sides are 3x and 4x, making the hypotenuse what?
anonymous
  • anonymous
I guess you can make the hypotunese 27, atleast thats what the teacher said...
anonymous
  • anonymous
These guys are way smarter than I am lol and besides at the end of tonight you'll have this solved ♥
anonymous
  • anonymous
Let's start from the beginning. Do you know what the Pythagorean Theorem says?
anonymous
  • anonymous
that kid @iCanHelp gives smart answers though lol
anonymous
  • anonymous
yes the pythagorean theorem says: a2 + b2 = c2
anonymous
  • anonymous
On the TV screen, what are a, b, and c?
anonymous
  • anonymous
a^2 + b^2 = c^2 (3x)^2 + (4x)^2 = 27^2 = 729 (3x)(3x) + (4x)(4x) = 729 9x^2 + 16x^2 = 729 25x^2 = 729 Does this help point you in the right direction?
anonymous
  • anonymous
thats the problem! I only know that you have to use proportions AND the pythagoream theorem to figure this out
anonymous
  • anonymous
but every method you guys are giving me I've already used, and it doesn't me the answer that is 21.6in by 16.2in
anonymous
  • anonymous
If you draw a triangle consisting of a height, width, and the diagonal, you have a right triangle, OK? The screen is a rectangle. Of these three, which is the hypotenuse?
anonymous
  • anonymous
Can i just post the whole EXACT problem to you guys so you can understand what I mean?
anonymous
  • anonymous
I understand what the problem means. The question is, can you see the right triangle and identify the hypotenuse out of it?
anonymous
  • anonymous
I don't normally like doing this and I'm sorry robspooner you're doing an excellent job explaining but... a^2 + b^2 = c^2 (3x)^2 + (4x)^2 = 27^2 = 729 (3x)(3x) + (4x)(4x) = 729 9x^2 + 16x^2 = 729 25x^2 = 729 x = sqrt(729/25) = 5.4 3x = 3*5.4 = 16.2 4x = 4*5.4 = 21.6 Understand?
anonymous
  • anonymous
Of course he doesn't understand. And if he still doesn't understand when he writes down the answer, what's the point here?
anonymous
  • anonymous
oh mother flabber you rock so much omg thankyou so much it means so much to me you don't even know!! thankyou so much @few
anonymous
  • anonymous
Don't just write my answer down, crazyary8. Take the time to listen to what robspooner is saying and understand. If you're getting asked these questions, they WILL appear on tests when OpenStudy isn't available. This is a basic concept of mathematics that MUST be learned and committed to memory.
anonymous
  • anonymous
No, I'm really good at math..it's my strongest subject. This is the very FIRST time i have ever asked somebody desperately for math help. People always come to me. I can't just write down the answer, cause I have to explain it to my teacher as well and when I see how you did it I will figure it out. I'm not like that don't worry (:
anonymous
  • anonymous
how did you get the 27x though on the second line
anonymous
  • anonymous
27x...? Where?

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