According to your lesson which of the following are theories that attempt to explain
how the first people came to the americas?
a. southeast asians sailed across the pacific ocean to north america
b. nomadic hunters crossed the beringia land bridge into north america more than
12,000 years ago
c. europeans came to the americas thousands of years before columbus
d. all of the above

B

Explanation:  From what my history class, it said that hunter gatherers came to North America from land bridges thousands of years ago, and primarily started in Alaska and Canada. Some Vikings did come here before Columbus but that is not the answer because they either left or didn't survive long.

Option: B. Nomadic hunters crossed the Beringia land bridge into North America more than

12,000 years ago

Explanation:

The continent of North America was connected with Siberian land, formed a land bridge by which the first people came to the Americas. The land bridge is called Beringia, which was not covered with ice but was a grassland steppe, that stretched in the continent on both sides.    

answer

explanation

the given equation is

we can rewrite this as:

let

then the equation becomes:

the factors of 8 that sum up to -9 are {-1,-8}

we split the middle term with these factors to obtain,

we factor by grouping to obtain:

apply the zero product property to get:

but