Respuesta :
Answer:
Step-by-step explanation:
Mean = 7
3+ 6 + a + 9 +10 / 5 = 7
28 + a / 5 = 7
28 + a = 7* 5
28 + a = 35
a = 35 - 28
a = 7
Answer:
Step-by-step explanation:
Mean = 7
3+ 6 + a + 9 +10 / 5 = 7
28 + a / 5 = 7
28 + a = 7* 5
28 + a = 35
a = 35 - 28
a = 7