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nika2105 [10]
3 years ago
9

21.6% can u please change this to a decimal and include the work like I had it in the little picture . Plss and thank you .

Mathematics
1 answer:
Nadya [2.5K]3 years ago
4 0

Answer:

<em>Decimal Form; 0.216 </em>

Step-by-step explanation:

If we are to convert to a decimal, move the decimal point 2 to the left, as such;

21.6 percent ( % ), ⇒ move decimal place two to the left,

<em>Decimal Form; 0.216 </em>

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What is a perfect square? Why is <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B%208x%20%2B16" id="TexFormula1" title="x^{2}
ivanzaharov [21]

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Explanation:

Perfect squares are of the form

(

a

+

b

)

2

=

a

2

+

2

a

b

+

b

2

. In polynomials of x, the a-term is always x.(

(

x

+

c

)

2

=

x

2

+

2

c

x

+

c

2

)

x

2

+

8

x

+

16

is the given trinomial. Notice that the first term and the constant are both perfect squares:

x

2

is the square of x and 16 is the square of 4.

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8

x

is of the form

2

c

x

.

The middle term is twice the constant times x, so it is

2

×

4

×

x

=

8

x

.

Okay, we found out that the trinomial is of the form

(

x

+

c

)

2

, where

x

=

x

and

c

=

4

.

Let us rewrite it as

x

2

+

8

x

+

16

=

(

x

+

4

)

2

. Now we can say it is a perfect square, as it is the square of

(

x

+

4

)

.

3 0
2 years ago
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