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3 years ago

7

Your new TV screen has a width that is 4 inches longer than its height. If the screen's diagonal measurement is 20 inches, find

the height.

1 answer:

scoundrel [369]3 years ago

7 0

Answer:

So the height is 12

Step-by-step explanation:

Let W be the width

Let W- 4 be the height

W2 +(W-4)2 = 400

So: W2 -4W-192 =0

One uses the quadratic solution:

W = (4 + (16 + 4*192).5)/2 = 16

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