Answer:
x = -3, y = 1
Step-by-step explanation:
To find the value of x and y, find the determinant of original matrix, which would be 21.
Then, substitute the value of x with the solutions to the equations and find the determinant of that matrix, which is -63.
Cramer's rule says that Dx ÷ D is the value of x. So, -63 ÷ 21 = -3.
So, the x-value is -3.
You can find the determinant of the y-value in the same way, and you'll find out that y = 1.
Hope this helped! :)
Answer:
roast beef=$6 per sandwich
ham=$5 per sandwich
Step-by-step explanation:
Answer:
12%
Step-by-step explanation:
2a+3
Step-by-step explanation:
It would be choice b.
The domain is the range of x values which in this case is from -5 to 3.
