eclarirenebat eclarirenebat

13-10-2016
Mathematics

contestada

The length of a pendulum varies directly with the square of the period of the pendulum. If a pendulum 2m long has a period of 4 seconds (s), what is the length of a pendulum with a period of 10s?

a. 1.25m

b. 12.5m

c. 80m

d. 800m

Respuesta :

trashwang30 trashwang30

14-10-2016

B. 12.5m , that's the most possible answer

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x2 + 10x + 16 = 0 (x + 2)(x + 8) = 0 x + 2 = 0 or x + 8 = 0 x = and x =