Question

La teza de la matematică , elevii unei clase au obținut 2 note de 4 , 3 note de 5 , 6 note de 6 , 6 note de 7 , 7 note de 8 , 1 notă de 9 și 3 note de 10. Calculați media clasei la teza respectivă. URGENT!!!

Answer 1

⛅SALUT!✌

☀RĂSPUNS: 7✔

$\color{blue} \boxed{2 \: note \: de \: 4 } \\ \green{ \boxed{3 \: note \: de \: 5} } \\ \orange{ \boxed{6 \: note \: de \: 6} }$

$\pink{ \boxed{6 \: note \: de \: 7} } \\ \purple{ \boxed{7 \: note \: de \: 8}}$

$\red{ \boxed{1 \: nota \: de \: 9} } \\ \boxed{ \boxed{3 \: note \: de \: 10} }$

$\red{ \boxed{ \boxed{ m_{a} = \frac{x + y }{2} } } }$

$m_{a} = {?}$

$\blue{ m_{a} = \frac{2 \times 4 + 3 \times 5 + 6 \times 6 + 6 \times 7 + 7 \times 8 + 1 \times 9 + 3 \times 10}{28} }$

$\blue{ m_{a} = \frac{8 + 15 + 36 +42 + 56 + 9 + 30 }{28} }$

$\blue{ m_{a} = \frac{23 + 36 + 42 + 56 + 9 + 30}{28} }$

$\blue{ m_{a} = \frac{59 + 42 + 56 + 9 + 30}{28} } \\ \blue{ m_{a} = \frac{101 + 56 + 9 + 30}{28} }$

$\blue{ m_{a} = \frac{157 + 9 + 30}{28} } \\ \blue{ m_{a} = \frac{166 + 30}{28} } \\ \blue{ m_{a} = \frac{196}{28} } \\ \blue{ \boxed{ \boxed{7} } }$

✒Sper ca te-am ajutat!!!☺

⭐ SUCCES❗