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3 years ago

11

What property is 12(x+4)=12x+48

2 answers:

Nadusha1986 [10]3 years ago

7 0

Answer:

Distributive property

Step-by-step explanation:

elena-14-01-66 [18.8K]3 years ago

3 0

Answer:

This is the distributive property.

Step-by-step explanation:

Notice how they are multiplying the twelve by both numbers in the parenthesis, this is known as distributing. Whenever you multiply a number and a variable you usually just connect them, except for 12 and 4, they must be multiplied together as they are like terms.

If this is still confusing, be sure to ask me some more questions!

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2 years ago

An equilateral triangle has a perimeter of 48 cm. What is the area?

KiRa [710]

Answer:

$A=64\sqrt{3}\ cm^2$

Step-by-step explanation:

we know that

An <u><em>equilateral triangle</em></u> has three equal sides and three equal interior angles (each interior angle measure 60 degrees)

so

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where

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we have

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substitute

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The formula of area applying the law of sines is equal to

$A=\frac{1}{2}b^2sin(60^o)$

substitute the value of b

$A=\frac{1}{2}(16)^2sin(60^o)$

$sin(60^o)=\frac{\sqrt{3}}{2}$

$A=\frac{1}{2}(16)^2(\frac{\sqrt{3}}{2})$

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