Răspuns:
2. a)9(am numarat cate note de la 7 in sus sunt)ps am gresit la asta scz
b) 6,68(am facut media aritmetica adica am adunat toate notele si le-am impartit la cate sunt ) aici:3+2×4+5×4+6×5+7×4+8×5+9×2+10×2/ 25
3. 6,65 :4×2+5×3+6×5+7×4+8×3+9×2+10/20
4.a)7(am numarat cate note de la 8 in sus sunt)
b)6,24 :2+3+4×3+5×5+6×4+7×4+8×3+9×2+10×2/25
