bnonatoter1mar bnonatoter1mar
  • 23-10-2016
  • Mathematics
contestada

The sum of a number and it's reciprocal is 2.9. what is the number?

Respuesta :

FadedCarmineBro
FadedCarmineBro FadedCarmineBro
  • 26-10-2016
x +1/x = 29/10 

(x^2+1)/x = 29/10 

x^2 - 2.9x + 1 = 0 

This is a quadratic equation, which can be solved using the quadratic formula. 

The final answers are x = 2.5, and x = 0.4.
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