Respuesta :

sqdancefan

Answer:

  3.1

Step-by-step explanation:

The Pythagorean theorem can be used to find x/2.

  (x/2)² +1.4² = 2.1²

  x²/4 +1.96 = 4.41

  x² = 4(2.45)

  x = 2√2.45 ≈ 3.1

The value of x is about 3.1.