Question

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.

Answer 1

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