Question

Calcule o valor de x:

x = 9
x = 10
x = 11
x = 12

Answer 1

Boa noite!

H^2 = Ca^2 + Co^2
(3V11)^2 = (3V2)^2 + Co^2
9V121 = 9V4 + Co^2
9 • 11 = 9 • 2 + Co^2
99 = 18 + Co^2
99 - 18 = Co^2
81 = Co^2
V81 = Co
9 = Co

Letra A
X = 9