Question

An oil road tanker can hold 24 tonnes of oil.
-In cold weather, the oil tanker is able to pump out x tonnes
of oil every minute,
1)Write down an expression in terms of x for the number of
minutes it takes the tanker to empty all the oil in cold weather.
3 b
In hot weather, the tanker can pump out (x +0.5) tonnes of oil
every minute.
24-(x+0.5)

2)Write down an expression in terms of x for the number of
minutes it takes the tanker to empty all the oil in hot weather.

It takes 2 minutes longer to empty the tanker in cold weather
than in hot weather.
3)Write down an equation in r and show that it simplifies to
2xsquare+ x-12=0
Solve the quadratic equation 2xsquare + x - 12 = 0 giving your
solutions to three decimal places.

Find the time it takes, in minutes and seconds, correct to the
nearest second, for the tanker to empty the oil in cold weather.​

Answer 1

Answer:

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