Помогите пожалуйста!!! Баллы.

$1,2\ \textless \ x\ \textless \ 2,4\\\\1,5\ \textless \ y\ \textless \ 2,7\\\\a)\; \; 2,4\ \textless \ 2x\ \textless \ 4,8\; \; \; ;\; \; \; 3,0\ \textless \ 2y\ \textless \ 5,4\\\\5,4\ \textless \ 2x+2y\ \textless \ 10,2\\\\b)\; \; 1,8\ \textless \ xy\ \textless \ 6,48\; \; \; ; \; \; 9\ \textless \ 5xy\ \textless \ 32,4\\\\c)\; \; 0,6\ \textless \ 0,5x\ \textless \ 1,2\; \; ;\; \; \; -0,27\ \textless \ -0,1y\ \textless \ -0,15\\\\0,33\ \textless \ 0,5x-0,1y\ \textless \ 1,05\\\\d)\; \; \frac12,4 \ \textless \ \frac1x \ \textless \ \frac11,2 \; \; \to \; \; \frac1024 \ \textless \ \frac1x \ \textless \ \frac1012 \; \; \to \; \; \; \frac512\ \textless \ \frac1x\ \textless \ \frac56 \\\\ \frac1027\ \textless \ \frac1y\ \textless \ \frac23 \\\\ \frac512+\frac1027\ \textless \ \frac1x+\frac1y \ \textless \ \frac56+\frac23$

$\frac85108\ \textless \ \frac1x+\frac1y\ \textless \ \frac32 \\\\2)\; \; 2,4\ \textless \ \sqrt6\ \textless \ 2,5\; \; ;\; \; \; 2,6\ \textless \ \sqrt7\ \textless \ 2,7\\\\\sqrt28-\sqrt42=2\sqrt7-\sqrt6\cdot \sqrt7\\\\5,2\ \textless \ 2\sqrt7\ \textless \ 5,4\; \; \; ;\; \; \; 6,24\ \textless \ \sqrt6\cdot \sqrt7\ \textless \ 6,75\; \; ;\\\\-6,75\ \textless \ -\sqrt6\cdot \sqrt7\ \textless \ -6,24\\\\-1,55\ \textless \ 2\sqrt7-\sqrt6\cdot \sqrt7\ \textless \ -0,84$

О проекте

Помогите пожалуйста!!! Баллы.

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