madshay
madshay
08-07-2018
Mathematics
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I need help plz with this question
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Banabanana
Banabanana
08-07-2018
[tex]D= \cfrac{m}{v} \ \ \Rightarrow \ \ m=D\cdot v\\\\ \text{If } \ D= \cfrac{1}{4} \ \ \text{and } v=m+3 \ \ \text{then:} \\ \\ m= \cfrac{1}{4} \cdot(m+3) \\\\m= \cfrac{1}{4} m+ \cfrac{3}{4} \\ \\ m- \cfrac{1}{4} m= \cfrac{3}{4} \\ \\ \cfrac{3}{4} m= \cfrac{3}{4} \\ \\ \boxed{m=1}[/tex]
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