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IgorC [24]
3 years ago
8

How to put 412.638 in expanded form using decimals

Mathematics
2 answers:
sergeinik [125]3 years ago
7 0

The <em>correct answer</em> is:


400 + 10 + 2 + 0.6 + 0.03 + 0.008.


Explanation:


To write a number in expanded form, we use place values.


4 is in the hundreds place; this makes its value 400.

1 is in the tens place; this makes its value 10.

2 is in the ones place; this makes its value 2.

6 is in the tenths place; this makes its value 0.6.

3 is in the hundredths place; this makes its value 0.03.

8 is in the thousandths place; this makes its value 0.008.


To write this together, we find the sum:

400 + 10 + 2 + 0.6 + 0.03 + 0.008.

DENIUS [597]3 years ago
3 0
We can write 412.638 as 

412.638 = 400 + 10 + 2 + 0.6+0.03+0.008

                     = 4*10^2 + 10 + 2 + 6*10^{-1}+ 3*10^{-2} + 8*10^{-3}

So this is required expanded form of the given number.
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Let's to the first example:

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Ussing the formula of basckara

a = 1
b = 9
c = 20

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Replacing the information

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Now we are going to the 3 example

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x^2 - 14x + 24 = 0

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Then we stayed with:

x = [ -b +/- √Delta ]/2a

x = [ -(-14) +/- √100 ]/2

We wiil have two possibilities

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To the last example will be the same thing.

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x = (1 - 17)/2 <=> -8

Or

x = (1+17)/2 <=> 9


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