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My name is Ann [436]
3 years ago
13

A car can travel 400 miles on a full tank of petrol. A more efficient car can travel 32% further. How many miles can it travel o

n a tank?
Mathematics
1 answer:
Lorico [155]3 years ago
3 0

Answer:

Answer:160 miles


Explanation:

You can work out this type of question by using the 'unitary' method, which means finding out how much for ONE.


If you set out the steps with short sentences it will be clearer.


 

On 15 gallons, a car can travel 400 miles÷15↓

On 1 gallon, a car can travel 400÷15=262


miles


Once you know the distance travelled on 1 gallon of fuel, you can work out the distance travelled for any number of gallons.


 

On 6 gallons the car can travel

6

×

26

2

3

miles.

(6 times further than on 1 gallon)


6

×

80

3

=

160

miles

Step-by-step explanation:


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Svetach [21]
Presumably you should be doing this using calculus methods, namely computing the surface integral along \mathbf r(u,v).

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In calculus terms, we would first find an expression for the surface element, which is given by

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6 0
3 years ago
Jada solved the equation Negative StartFraction 4 over 9 EndFraction = StartFraction x over 108 EndFraction for x using the step
aleksandr82 [10.1K]

Answer:

Jada error was he multiplied the equation by (-9/4) to make the coefficient of x one. He should have multiplied it by 108

Step-by-step explanation:

Jada solved the equation

-4/9 = x/108

using the steps below:

-4/9 = x/108

(-4/9)(-9/4) = (x/108)(-9/4)

x = -1/48

Jada should have multiplied through by 108, instead of (-4/9). That was the error he made.

Multiplying through by 108 gives

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The answer should have been

x = -48

and not

x = -1/48

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