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Vika [28.1K]
3 years ago
8

Center at (0, 0), radius 2

Mathematics
1 answer:
Step2247 [10]3 years ago
6 0

Answer:

x² + y² = 4

Step-by-step explanation:

The equation of a circle centred at the origin is

x² + y² = r² ← r is the radius]Here r = 2, thus

x² + y² = 4

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What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br> x =
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The answer is:  " 11 " .
____________________________________________________
            →     " x  =  11  "  .
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Explanation:
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Now, we can "cross-multiply" :
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<u>Note</u>:  Given: \frac{a}{b} = \frac{c}{d} ;  ad = bc ; 
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__________________________________________________
 
As such:      
 
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Subtract "7" from each side of the equation:

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</span>
to get:  

   → 3x = 33 ; 

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   →    " x = 11 " .
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