Answer: score if the sixth pupil is 90
Step-by-step explanation:
Mean mark-75.5
6pupil
83+73+71+67+69+x= 75.5
363+x=75.5×6
×=453-363
×=90
3500 is about 70% of 5000
Answer:
Need pic
+4
The numbers above are all odd number
The arithmetic progression is the addition of +4
7+4=11
11+4=15
15+4=19