Question

Va rog frumos dau coroana ​

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

Răspuns:

4)

$\frac{x}{0.36} = \frac{4}{x}$

⇒ x² = 4·0.36

$x^{2} =4*\frac{36}{100}$

$x^{2} =\frac{36}{25}$

$x\geq 0 => x=\frac{6}{5}$

5)

$8.25-\frac{1}{2} :2=8.25-\frac{1}{2}*\frac{1}{2}=8.25-\frac{1}{4}=8.25-0.25=8$

6)

BC² = AB²+AC²

BC² = 6²+8²

BC² = 36+64

BC² = 100 ⇒ BC = 10