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3 years ago

How many litres of fuel will a car use to travel 450 km if its fuel consumption is 6,8 km/l?

Mathematics

1 answer:

valentina_108 [34]3 years ago

7 0

Step-by-step explanation:

are you sure the fuel consumption is given by 6,8 km/l ?

normally it is given by l/100km.

but ok, let's assume this is correct.

it would mean the car can drive 6,8 km with every liter of fuel in the tank.

how many liters will the car need to go 450 km ?

well, as many liters as 6,8 fits into 450 :

450/6,8 = 66.17647059... liters

this is not a very fuel efficient car ...

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A can of tuna has a volume 18pi cm3 and a height of 2 cm. Find the area of the label that wraps around the entire can and does n

Sphinxa [80]

Answer:

The area of the label is $12\pi\ cm^{2}$

Step-by-step explanation:

step 1

Find the radius

we know that

The volume of the cylinder (can of tuna) is equal to

$V=\pi r^{2} h$

In this problem we have

$V=18\pi\ cm^{3}$

$h=2\ cm$

substitute and solve for r

$18\pi=\pi r^{2} (2)$

Simplify

$18=r^{2}(2)$

$r^{2}=9$

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step 2

Find the lateral area of the can

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3 years ago

How do you simplify 2x + 2x -9 =15

vivado [14]

Step-by-step explanation:

4x-9=15

Solutuon

4x-9=15

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1 year ago

The power generated by an electrical circuit (in watts) as a function of its current xxx (in amperes) is modeled by:

vodka [1.7K]

Answer:

300watts

Step-by-step explanation:

Given the power generated by an electrical device modeled by the equation

P(x) = -12x²+120x

The maximum power generated occurs when dP(x)/dx = 0

dP(x)/dx = -24x+120 = 0

-24x + 120 = 0

-24x = -120

x = 120/24

x = 5

Substitute x = 5 into the modeled function to get the maximum power as shown;

Recall that: P(x)=-12x^2+120x

P(5) = -12(5)² + 120(5)

P(5) = -12(25) + 600

P(5) = -300+600

P(5) = 300

Hence the maximum power generated by the circuit is 300watts

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3 years ago

Read 2 more answers

Please help. Will give brainliest.

Anastaziya [24]

Answer:

radius [r]=3in

length of bold part of circle=(360-40°)/360×2πr

=8/9×2×π×3=16.755

we have

x²-2=2-y²

x²+y²=4..........(1)

comparing above equation with

(x-h)²+(y-k)²=r²

we get

centre(h,k}=(0,0)

radius [r]=2 units

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3 years ago

When divided by 5, I am 60. When divided by 6, I am 50. What number am I?

faltersainse [42]

You do 60 × 5 = 300, which should be the answer. We can double check this by doing 50 × 6 = 300. So the answer is 300

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3 years ago

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How many litres of fuel will a car use to travel 450 km if its fuel consumption is 6,8 km/l?​

How many litres of fuel will a car use to travel 450 km if its fuel consumption is 6,8 km/l?