Answer:
$339.51.
Step-by-step explanation:
To travel 259.6 km the car owner uses 22 liters of petrol
To ..................1 km ...........................................22 / 259.6 liters.
So ...........2013.2 km ..................................(22/ 259.6) * 2013.2 LITERS.
So the required cost is $ (22/ 259.6) * 2013.2 * 1.99
= $339.51
22 liters of petrol to travel 259.6 km
1litres will travel 259.6/22 km
1litres will travel 11.8km
:2013.2km needs 2013.2/11.8litre
:2013.2km needs 170.61litres
And 1 liter of petrol costs $ 1.99
So 742.88 litres will cost $1.99×170.61
I'm guessing the answer is B againn XD
must be a lucky day for B!!
Variance of a continuous random variable X is defined as
Standard deviation is defined as
Hence standard deviation is the positive square root of variance.