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ArbitrLikvidat [17]
2 years ago
12

petrol and engine oil has to mix in the ratio 5 : 2 for a certain motorcycle how much engine oil is needed to mix with 10 litres

of petrol ​
Mathematics
1 answer:
lana66690 [7]2 years ago
7 0

Answer:

Step-by-step explanation:

Set this up as a ratio of proportions of petrol : oil

\frac{p}{o} and if the ratio of the mix has to be 5p to 2 oil then:

\frac{p}{o}:\frac{5}{2}  We need to find how much oil, x, is needed to mix with 10 liters of petrol. Completing the proportion with that ratio gives us the problem in its entirety:

\frac{p}{o}:\frac{5}{2}=\frac{10}{x} and cross multiply

5x = 20 so

x = 4 liters of oil are needed to mix with 10 liters of petrol.

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If the length of the hypotenuse of a right triangle is 39 millimeters and the length of one leg is 15 millimeters what is the le
Genrish500 [490]

Answer:

36 millimeters

Step-by-step explanation:

From Pythagoras theorem, the square of the hypotenuse is equal to the sum of the square of the two other legs

In mathematical terms;

a^2 = b^2 + c^2

Let a represent the hypotenuse = 39 mm and the length of one leg, say c, is 15 mm

Slotting in the values of a and b

39^2 = b^2 + 15^2

1521 = b^2 + 225

collect like terms

1521 - 225 = b^2

1296 = b^2

Take the square root of both sides

36 = b

Therefore b = 36 mm

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3 years ago
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the nearest thousand is 8,000 as it is past 7,500.

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Answer:

6

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1. One comes first, two comes second, and three comes last.

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3. One comes second, Two comes first, and three comes last.

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The volume of a right rectangular prism is 573.3 cm³. The length of the right rectangular prism is 7.35 cm and the height is 16.
IgorLugansk [536]
The width of the right rectangular prism is 4.8. You multiply 7.35 by 16.25 and then you divide 573.3 by that answer. So, 573.3 ÷ 119.4375 = 4.8. Hope this helped
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33.3% is the answer, I think

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