Answer:6-8^10=?
Step-by-step explanation:
Answer:
< EFG
< GFE
Step-by-step explanation:
The letter for the vertex must be in the middle
< EFG
< GFE
<F
General Idea:
The Cramer's rule can be used to find the value of y.
For a system of equation of the form:



Determinant ![D =\left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right]](https://tex.z-dn.net/?f=%20D%20%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da%26b%26c%5C%5Cd%26e%26f%5C%5Cg%26h%26i%5Cend%7Barray%7D%5Cright%5D%20%20)
![D_{y} =\left[\begin{array}{ccc}a&j&c\\d&k&f\\g&l&i\end{array}\right]](https://tex.z-dn.net/?f=%20D_%7By%7D%20%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da%26j%26c%5C%5Cd%26k%26f%5C%5Cg%26l%26i%5Cend%7Barray%7D%5Cright%5D%20%20)

Applying the concept:

![D=\left[\begin{array}{ccc}1&2&-2\\3&-1&1\\1&0&1\end{array}\right] \\D=1(-1-0)-2(3-1)-2(0+1)\\D=-1-4-2\\ D=-7](https://tex.z-dn.net/?f=%20D%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%262%26-2%5C%5C3%26-1%261%5C%5C1%260%261%5Cend%7Barray%7D%5Cright%5D%20%5C%5CD%3D1%28-1-0%29-2%283-1%29-2%280%2B1%29%5C%5CD%3D-1-4-2%5C%5C%20D%3D-7%20%20%20)
![D_y=\left[\begin{array}{ccc}1&3&-2\\3&16&1\\1&7&1\end{array}\right] \\ D_y=1(16-7)-3(3-1)-2(21-16)\\ D_y=9-6-10 \\D_y=-7](https://tex.z-dn.net/?f=%20D_y%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%26-2%5C%5C3%2616%261%5C%5C1%267%261%5Cend%7Barray%7D%5Cright%5D%20%5C%5C%20D_y%3D1%2816-7%29-3%283-1%29-2%2821-16%29%5C%5C%20D_y%3D9-6-10%20%5C%5CD_y%3D-7%20%20)
Conclusion:
The expression which gives the y-coordinate of the solution of the system is option D.
![OptionD=\frac{\left[\begin{array}{ccc}1&3&-2\\3&16&1\\1&7&1\end{array}\right] }{-7}](https://tex.z-dn.net/?f=%20OptionD%3D%5Cfrac%7B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%26-2%5C%5C3%2616%261%5C%5C1%267%261%5Cend%7Barray%7D%5Cright%5D%20%7D%7B-7%7D%20%20)
Answer:
77
Step-by-step explanation: