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Jet001 [13]
3 years ago
14

The length of a rectangle is 4 cm more than 3 times it’s width. If the area of the rectangle is 15 cm^2, find the width. Use qua

dratic equations.

Mathematics
2 answers:
REY [17]3 years ago
6 0
Well, you should probably check with somebody else but i had got 26.5 or 26 1/2. I'm not sure if that is correct due to it saying to use quadratic equations. Sorry
Inessa [10]3 years ago
3 0
Same answer as the first question be with the quadratic formula

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The cost of petrol rises by 2 cents a liter. Last week a man bought 20 liters at the old price. This week he bought 10 liters at
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Answer: the old price for 1 liter is $0.3

Step-by-step explanation:

Let x represent the old price for 1 liter of petrol.

Last week a man bought 20 liters at the old price. This means that the total amount that the man paid for 20 liters is 20x.

The cost of petrol rises by 2 cents a liter. This means that the new price per liter is x + 2/100 = x + 0.02

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Altogether, the petrol costs $9.20. This means that

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30x + 0.2 = 9.2

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Answer:

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