Answer:
Step-by-step explanation: NS
Knowing the history of credit cards makes you understand why credit cards were created and the reason they were necessary for human societies.
<h3>What is the focus of history?</h3>
History teaches you about the origin of specific elements, in this case, credit cards, and their evolution over time.
<h3>Why is history important?</h3>
History is about both origin and evolution; due to this:
- History explains why credit cards emerged and the reason they were necessary.
- History shows you the way credit cards have changed or stayed the same due to different causes.
Learn more about history in: brainly.com/question/3583505
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Answer:
option: A
Step-by-step explanation:
" if for a polynomial with rational coefficients has irrational roots then these irrational roots will always appear in pair " .
we are given that 
and 
are two roots of a polynomial equation with rational coefficients, then it's complex conjugate is also a root of this polynomial equation i.e. ' 
' and ' 
' are also roots of this polynomial equation.
Hence, option A is correct.
<span>for finding the value, as follows is the method:
in 15th of march,his bank showing a balance of $56.75.in March 20, it was $87.37 (after 5 days)
$87.37 -$56.75.=$30.62, and $30.62+$5+$13.5=$48.87. Carlos deposited in his account between the March 15 and the March 20 the amount of $48.87. So the answer is the choice B.</span>
