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2 years ago

From some petroleum, you can get 30% of paraffin. How much petroleum do you need in order to get 18.75 tons of paraffin?

Mathematics

2 answers:

8090 [49]2 years ago

8 0

You would have to do 18.75/30%
=75/4*100/30=125/2

Wewaii [24]2 years ago

6 0

Answer:

62.5 tons.

Step-by-step explanation:

Let x be the tons of petroleum.

We have been given that we can get 30% of paraffin from some petroleum.

To find the the amount of petroleum we need to figure out x such that 30% of x is 18.75.

We can represent this information in an equation as:

$\frac{30}{100}*x=18.75$

Let us solve for x.

$0.30*x=18.75$

Let us divide both sides of our equation by 0.30.

$\frac{0.30*x}{0.30}=\frac{18.75}{0.30}$

$x=62.5$

Therefore, we need 62.5 tons of petroleum to get 18.75 tons of paraffin.

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Answer:

The value of y is 6 $\sqrt{3}$ units ⇒ 2nd answer

Step-by-step explanation:

In the attached figure

∵ ∠MTN is a right angle

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∴ MN = 3 + 9 = 12 units

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A zookeeper is monitoring the population of birds. The flock needs to have exactly three times more females than males to thrive

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Answer:

The constraints are

$0 < x\leq 20$ and $0 < y\leq 60$

Step-by-step explanation:

Let

x ----> represent the number of male birds

y ----> represent the number of female birds

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$y=3x$ ----> equation A

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Answer:

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2 years ago

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Answer:

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Step-by-step explanation:

We have three different posibilities

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