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Vera is using her phone its battery life is down to two fifths and it drains another one nineth fraction every hour. how many hours will her battery last

Respuesta :

2018jonw

Answer:

3.6

Step-by-step explanation:

ok, Where x= total hours, the function is (2/5)-(1/9)x=total life

5ths and 9ths dont get along, so we must find a common denominator, in this case 45.

so now we have 18/45-5/45x=TL

or .4-.111...x=tl

By  plugging in numbers, I got 3.6 hours of life

Answer:

3.6

Step-by-step explanation:

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