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zaharov [31]
3 years ago
14

Using the fact this is a 3, 4, 5 triangle, find the missing side *

Mathematics
1 answer:
Tasya [4]3 years ago
5 0

Answer:

0.8

Step-by-step explanation:

I Dont know 3, 4, 5 so I am going to just use the normal formula

a^2 + b^2 = c^2

0.6^2 + b^2 = 1^2

0.36 + b^2 = 1

b^2 = 0.64

b= 0.8

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finlep [7]

Here!

<h2>The answer is Option A!</h2>

(x + 2 \sqrt{3} i)(x - 2 \sqrt{3}i )

<h3>Why so??</h3>

Let's see what complex numbers are!

(x + 2  \sqrt{3 }i  )(x - 2 \sqrt{3}i ) \\  =  {x}^{2}  - 2 \sqrt{3} x + 2 \sqrt{3} x -  {(2 \sqrt{3} i)}^{2}  \\  =  {x}^{2}  -  {(2 \sqrt{3}i) }^{2}

Now we know,

{i}^{2}  =  - 1

So!

=  {x}^{2}  - 12 \times(  - 1)

=  {x}^{2}  + 12

And thus we get the answer!

3 0
3 years ago
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Jlenok [28]
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5 0
3 years ago
A store pays $15 for a shirt. The markup is 20% What is the selling<br> price?
vagabundo [1.1K]

Answer:

$18

Step-by-step explanation:

15 x 120%=$18

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3 0
3 years ago
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4 years ago
Solve for x.<br> 18x - 12<br> 16x +8<br> x = [?]
rodikova [14]

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