We know that in the aquarium there is 6 less yellow fish. We also know that they take up 40% of the aquarium. We know that the other 60% of the fish tank has to be green fish.
From this we can see that the percentage difference between yellow fish’s 40% and green fish’s 60% is 20% And we also know that green fish has 6 more fish than yellow. So we know that 20% is 6 fish. We can use this data to know workout how many fish green has. The answer has to be 18. Hope this helps and if you get stuck You can comment underneath this and I’ll assist you there :)
Answer:
0
Step-by-step explanation:
We find the determinant of a matrix by the method below. If we have a matrix:
The determinant is
Now, using cramer's rule, we find x-value by the formula:
Where D is the determinant of the original problem and is the determinant of the x-value matrix. How do we get those?
<u><em>To get original matrix and thus D, we set up the matrix as the coefficients of x and y (s) of both the equations and to get matrix of x-value and thus , we replace the x values of the matrix with the numbers in the right hand side of the 2 equations.</em></u> We show this below:
<em />
<em>To get D:</em>
<em>To get :</em>
<em></em>
<em />
<em>Putting into the formula, we get:</em>
<em></em>
<em />
<em>Thus, the value of x is 0</em>
Answer:
X= -2
Step-by-step explanation:
2(x-4)=4(2x+1)
2x-8=8x+4
-8=6x+4
-12=6x
X= -2
Answer: A is parabola opening down
B is vertical line
C is positive slope
Step-by-step explanation: