Homework Help: algebra

Posted by Cassie on Saturday, March 16, 2013 at 6:48am.

A television screen measures 32 inches diagonally, and its aspect ratio is 4 to 3. Find the width and the height of the screen. (Round your answers to one decimal place.)

algebra - Reiny, Saturday, March 16, 2013 at 7:43am
let the length be 4x and the width 3x

then (4x)^2 + (3x)^2 = 32^2
25x^2 = 32^2
5x = 32
x = 32/5

length is 4x = 128/5 = 25.6
width is 3x = 96/5 = 19.2

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