That they migrated during the ice age over 12,000 years ago
Answer:
The growth of railroads allowed for much easier long distance travel. This enabled much more people to visit cities, allowing more to move and for them to grow faster. The railroads also enabled very long and fast distant trade.
Answer:y=1+r-2a where y=amount saved this year and a = amount available to be spent next year.
Explanation:for this year ,let actual money spent by Henry be x and savings by Henry be y
So x+y
=1+r
Remember 1+r I the money available for Henry to spend this year.so x=1+r-y is the expression for actual money spent by Henry.
So for money available to be spend next year a ,to be half of actual spend this year
Means a=x/2=1+r-y/2 ,so
2a=1+r-y
y=1+r-2a
I think in a learning environment it can not provide a positive purpose. It can cause you to lose focus as well as others around you.
