Question

Vă rog frumoasss....dau coroana și 8 puncte.​

Answer 1

4*2+5*4+6*5+7*6+8*5+9*4+10*4/30

8+20+30+42+40+36+40/30

50+50+80+36/30

180+36/30

216/30

7,2

Answer 2

$media = \frac{1 \times 0 + 2 \times 0 + 3 \times 0 + 4 \times 2 + 5 \times 4 + 6 \times 5 + 7 \times 6 +8 \times 5 + 9 \times 4 + 10 \times 4}{0 + 0 + 0 + 2 + 4 + 5 + 6 + 5 + 4 + 4} \\ media = \frac{8 + 20 + 30 + 42 + 40 + 36 + 40}{30} \\ media = \frac{216}{30} \\ media = 7.2$