Answer:
<h2>6.77, about 68 cents.</h2><h3>Step-by-step explanation:</h3><h3>Factor in your givens:</h3>
Tax rate = 6.8%
Total Currency = 9.95
Step 1:
68 / 100 = 0.68
Step 2:
0.68 * 9.95 = 6.766
<em>I hope this helped!</em>
A 2 x 2 matrix has 2 rows and 2 columns
A specific 2 x 2 matrix a with no zero entries at all is ![\left[\begin{array}{cc}1&-2\\-3&6&\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D1%26-2%5C%5C-3%266%26%5Cend%7Barray%7D%5Cright%5D)
<h3>How to construct the matrix?</h3>
From the question, we understand that the matrix is a 2 x 2 matrix.
A 2 x 2 matrix is represented as:
![\left[\begin{array}{cc}a&b\\c&d&\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7Da%26b%5C%5Cc%26d%26%5Cend%7Barray%7D%5Cright%5D)
Also from the question we understand that the elements of the matrix are non-zero.
This means that:

An example of such matrix is:
![\left[\begin{array}{cc}1&-2\\-3&6&\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D1%26-2%5C%5C-3%266%26%5Cend%7Barray%7D%5Cright%5D)
Note that there are several matrices that fit the given construction requirement
Read more about matrix at:
brainly.com/question/1821869
Answer:
120 bpm
Step-by-step explanation:
after strenuous exercise your heart rate wouldn't decrease as your body needs more oxygenated blood causing your heart to pump harder and faster
Answer:
B. 4x + 2x - 1 = 2
Step-by-step explanation:
Option B shows a correct step in using substitution to solve the system of equations.