Question

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Answer 1

12)

$\displaystyle P = I^{2}R$

$\displaystyle R = \frac{P}{I^{2}}$

$\displaystyle R = \frac{283,5}{4,5^{2}} =\frac{283,5}{20,25} =14$

Ответ: 14

13)

$\displaystyle \left \{ {{-35+5x<0} \atop {6-3x<-3}} \right.$

$\displaystyle \left \{ {{5x<35} \atop {-3x<-3-6}} \right.$

$\displaystyle \left \{ {{x<7} \atop {x>3}} \right.$

Ответ: 1