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Alenkasestr [34]
2 years ago
8

Justin fills his car with 40 litres of petrol. After travelling 35 miles it's down to 35 litres. Let be the number of litres in

a tank after driving miles (a) How much petrol does the car use each mile? (b) Write down the equation linking and , and check i
Mathematics
1 answer:
mixas84 [53]2 years ago
4 0

Answer:

a) 1/7 liters of petrol is used for each mile

Step-by-step explanation:

Justin fills his car with 40 litres of petrol. After travelling 35 miles it's down to 35 litres.

From the above statement:.

The difference is :

40 litres - 35 liters = 5 liters

Hence:

After travelling 35 miles he used 5 liters

(a) How much petrol does the car use each mile?

This is calculated as:

35 miles = 5 Liters

1 mile = x liters

Cross Multiply

35x = 5 Liters

x = 5/35

x = 1/7 liters

Hence, for each mile, 1/7 liters of petrol is used

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Which point is collinear with points a and d
Art [367]
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The point that I am using for point slope form is A(3, -4)

[y - (-4)] = -4/3(x - 3)
y + 4 = -4/3(x - 3)

Next you have to simplify the equation so that y is isolated

y + 4 = -4/3(x - 3)

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~~hope this helps~~

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