If a = 3 and ab =15, then (a+b)^2-a^2-b^2=

Is b=15 not ab=15

Explanation:

(a+b) ^2-a^2-b^2=(3+15)^2-3^2-15^2

=(18)^2-9-225

= 324-9-225

=90

the answer is b: the religion they practice.

here's why:

there were many different native american tribes and those with similar characteristics formed a main tribe or nation. each had its own language, religion and customs.

the virginia plan called for three branches of government and two houses of congress. representation in each house would be determined by population. the new jersey plan called for three branches of government and a single house of congress. each state would have an equal vote.