Question

Raspundeti repede va rog dau coroana

Answer 1

$\displaystyle 1.~~12-6:(1+2)=12-6:3=12-2=10~~~~~\boxed{d}\\\\ 2.~~360-\frac{30}{100} \cdot 360=360-(3 \cdot 36)=360-108=252~lei~~~~~\boxed{c}\\\\ 3.~~A=\{x\in\mathbb{N}~/~6-x\geq 1\}\\\\ 6-x\geq 1 \Rightarrow -x\geq 1-6 \Rightarrow -x\geq -5 \Rightarrow x\leq 5\\\\ x\in \mathbb{N}\Rightarrow x\in\{0;1;2;3;4;5\} \rightarrow 0+1+2+3+4+5=15~~~~~\boxed{d}\\\\ 4.~~\frac{5}{6} =0,8(3)~~~~~\boxed{c}$

Answer 2

Răspuns:

1.12-6:(1+2)=

12-6:3=

12-2=

6

2.100%.........360 lei

   70%..............x

-----------------------------

x=70×360:100=252 lei pretul dupa reducere

3. 6-x ≥ 1

x ≤ 6-1

x ≤ 5

S=0+1+2+3+4+5=>S=15

4. 5/6=5:6=0,8(3)