Question

Помогите с решением.

Answer 1

$1)...... \left \{ {{4t\ \textgreater \ 2} \atop {3t \geq 6}} \right. \; \left \{ {{t\ \textgreater \ \frac{1}{2}} \atop {t\ \textgreater \ 2}} \right. \; \Rightarrow \; \; t\ \textgreater \ 2$

Ответ:  №4.

$2)\; \ \textless \ AHB=180-(31+23)=126\\\\\ \textless \ BCA=360-(90+90+126)=54$