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4 years ago

0.138 into a decimal

Mathematics

1 answer:

Andru [333]4 years ago

8 0

Step-by-step explanation:

13.8% = 0.138 in decimal form.

Percent means 'per 100'. So, 13.8% means 13.8 per 100 or simply 13.8/100.

If you divide 13.8 by 100, you'll get 0.138 (a decimal number). Read more below on this webpage.

As you can see, to convert from percent to decimal just divide the percent value (13.8) by 100, and remove the "%" sign.

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Answer:

<h3><u>Let's</u><u> </u><u>understand the concept</u><u>:</u><u>-</u></h3>

Here angle B is 90°

So $\triangle ABC$ and $\triangle ABD$ Are right angled triangle

So we use Pythagoras thereon for solution

<h3><u>Required Answer</u><u>:</u><u>-</u></h3>

First in triangle ABC

perpendicular=p=8cm

Hypontenuse =h =10cm

We need to find base=b

According to Pythagoras thereon

${\boxed{\sf b^2=h^2-p^2}}$

Substitutethe values

$\longrightarrow$ $\sf b^2=10^2-p^2$

$\longrightarrow$ $\sf b={\sqrt {10^2-8^2}}$

$\longrightarrow$ $\sf b={\sqrt{100-64}}$

$\longrightarrow$ $\bf b={\sqrt {36}}$

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BD=BC+CD

$\longrightarrow$ $BD=9+6$

$\longrightarrow$ $BD=15cm$

Now in $\triangle ABD$

Perpendicular=p=8cm

Base =b=15cm

We need to find Hypontenuse =AD(x)

According to Pythagoras thereon

${\boxed {\sf h^2=p^2+b^2}}$

Substitute the values

$\longrightarrow$ $\sf h^2=8^2+15^2$

$\longrightarrow$ $\sf h={\sqrt {8^2+15^2}}$

$\longrightarrow$ $\sf h={\sqrt {64+225}}$

$\longrightarrow$ $\sf h={\sqrt {289}}$

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3 years ago

326.59 rounded to 1 decimal place

vekshin1

Answer:

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Step-by-step explanation:

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3 years ago

I’m really confused on how to do this

Julli [10]

Answer:

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Step-by-step explanation:

The format here is a bit weird, but it basically means x is six.

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3 years ago