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:
-1, 2
Step-by-step explanation:
Answer: hello your question is disorganized attached below is the question and solution
answer:
1) The system has a unique solution ( x = 0, y = 0 ) ( D )
2) The system has a unique solution ( x = 0, y = 3, z = 3 ) ( D )
Step-by-step explanation:
1 ) ![\left[\begin{array}{ccc}1&0\\0&1\\0&0\end{array}\right] \left[\begin{array}{ccc}0\\0\\0\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%260%5C%5C0%261%5C%5C0%260%5Cend%7Barray%7D%5Cright%5D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%5C%5C0%5C%5C0%5Cend%7Barray%7D%5Cright%5D)
this matrix is a homogenous since there are three(3) equations and 2 variables
hence the system has a unique solution ( attached below )
2) Attached below
The matrix is a Non-homogenous system since it comprises of three(3) equations and 2 variables
T = 12 min, T o = 80° C, T s = 50 °C, T ( 12 ) = 60° C
60 = 50 + ( 80 - 50 ) · e^(-12k)
10 = 30 · e^(-12k)
e^(-12k) = 0.3333...
ln ( 0.333.. ) = - 12 k
- 12 k = - 1.1
k = ( - 1.1 ) : ( - 12 ) = 0.0916
Answer: D ) 0.0916
The answer:
the main formula which should be used to reply this is:
g(x) - h(x) = (g-h) (x)
if the question does mean <span> g(x) = 3(2 ^ x )
</span>
k(x)= (g – h)(x) = 3(2 ^x ) - 2 ^(x+1)
and we know that because of a^x+p = a^*a^p
=3(2 ^x ) - 2 ^(x)2^1=(2 ^x )(3 - 2^1)
=(2 ^x )(3 - 2^1)= 2 ^x
the answer is <span>k(x) = 2^x</span>
