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Alexus [3.1K]
2 years ago
12

BRAINLIEST help pls,,,,,,,,,,,,,

Mathematics
2 answers:
icang [17]2 years ago
7 0
Hey there!

1/3 = ?/12

If we observe denominator , it is multiplied by 4

So we must multiple numerator by 4 too

=> 1/3 x 4/4 = 4/12

? = 12.
White raven [17]2 years ago
7 0
2/12 would be the answer
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Answer:  30 m ; (or, write as: "30 meters") .
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Explanation:
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Area of a trapezoid, "A" = (1/2) ( b₁ + b₂) h ;
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or, write as:  A = ( b₁ + b₂) h  / 2 ;
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in which:  A = area;
              b₁ = length of "base 1" (choose either one of the 2 (two bases);
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A = 100 m² ; 
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Find "x", which is:  "b₂" ;
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      A = ( b₁ + b₂) h  / 2  ;
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Plug in our known values; and plug in "x" for "b₂" ; and solve for "x" ;
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  100 m² = [(10m + x) (5m)] / 2  ; Solve for "x" ;
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          (10m + x) (5m) = (2)* (100m²) ;
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             (5m) (10m + x) = 200 m² ;
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Note:  The distributive property of multiplication:
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    a(b+c) = ab + ac ;
 
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So:    (5m) (10m + x) =  (5m*10m) + (5m * x) ;
                           
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Divide the ENTIRE equation by "5m" ;
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     →  10m + x  − 10m  =  40m − 10m ;

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3/4
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