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2 years ago

Maria said the 4 in 400,000 has a value of 400 is maria correct explain

Mathematics

2 answers:

taurus [48]2 years ago

8 0

Answer:

No Maria is not correct.

Step-by-step explanation:

Given : Maria said the 4 in 400,000 has a value of 400.

To find : Is maria correct? Explain.

Solution :

The place value system is

Hundred Th. Ten Th. Thousand Hundred Tens Ones

4 0 0 0 0 0

The value of 4 in 400,000 $4\times 100000$

i.e. The value of 4 in 400,000 is 4 hundred thousand not 4 hundred.

Therefore, No Maria is not correct.

AlladinOne [14]2 years ago

5 0

No Maria is wrong because if you look at placement value you would see 4 is in the one hundred thousands place.

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The same number of people live on the islands Beautiful Sunrise and Gorgeous

aev [14]

Using the percentage concept, it is found that 75% of the population of Gorgeous Sunset is on Beautiful Sunrise now.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

$P = \frac{a}{b} \times 100\%$

In this problem, we have that:

We consider that the population of both Beautiful Sunrise and Gorgeous Sunset islands is of x.

There is a fiesta at Beautiful Sunrise, and a number a of people from Gorgeous Sunset are coming, hence, there will be x + a people at Beautiful Sunrise and x - a people t Gorgeous Sunset.

The percentage of people from Gorgeous Sunset is on Beautiful Sunrise now is:

$P = \frac{a}{x} \times 100\%$

Now the number of people on Beautiful Sunrise is seven times the number of people on Gorgeous Sunset, hence:

$\frac{x + a}{x - a} = 7$

We can find a <u>as a function of x</u> to find the percentage:

$\frac{x + a}{x - a} = 7$

$7(x - a) = x + a$

$7x - 7a = x + a$

$8a = 6x$

$a = \frac{3x}{4}$

Then, the percentage is:

$P = \frac{a}{x} \times 100\%$

$P = \frac{\frac{3x}{4}}{x} \times 100\%$

$P = \frac{3}{4} \times 100\%$

$P = 75\%$

75% of the population of Gorgeous Sunset is on Beautiful Sunrise now.

You can learn more about the percentage concept at brainly.com/question/10491646

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svetoff [14.1K]

Answer:

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Step-by-step explanation:

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