Answer:
Surplus (extra) food from agriculture on river valleys
Answer:
Step-by-step explanation:
9, because 18 multiplied by 3 is equal to 54
54 multiplied by 2 is equal to 108
And,
108 divided by 12 is 9.
B because it’s just the correct answer
Answer:
3/7 x +5=8
move 5 to the other side
3/7 x= 8-5
3/7 x= 3
then move 7 to the other side it's sign is ÷ it will be ×
then 3x=3×7
3x=21
then move 3to the other side it's sign is × it will become ÷
x= 21/3
x= 7
He loses 9 pts for 90 sec