Предмет: Алгебра, автор: SscTay

Решите внятно и понятно! 6, 8, 9. 20б

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Автор ответа: NNNLLL54

$6)\; \; \frac{3^{12}\cdot 3^8}{(3^5)^4}=\frac{3^{20}}{3^{20}}=1\\\\8)\; \; S=a\cdot h=10\cdot 4=40\\\\9)\; \; AB=3\; ,\; \; AC=4\\\\BC=\sqrt{AB^2+AC^2}=\sqrt{3^2+4^2}=\sqrt{25}=5\\\\cos\angle CBA=\frac{AB}{BC}=\frac{3}{5}$

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This text deals with …

1. Dangerous shoes.

2. Following the rules.

3. Angry shoppers.

4. New fashion.

5. Dress rules.

6. Wear in special areas.

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