Answer:
Solution : (15, - 11)
Step-by-step explanation:
We want to solve this problem using a matrix, so it would be wise to apply Gaussian elimination. Doing so we can start by writing out the matrix of the coefficients, and the solutions ( - 5 and - 2 ) --- ( 1 )

Now let's begin by canceling the leading coefficient in each row, reaching row echelon form, as we desire --- ( 2 )
Row Echelon Form :

Step # 1 : Swap the first and second matrix rows,

Step # 2 : Cancel leading coefficient in row 2 through
,

Now we can continue canceling the leading coefficient in each row, and finally reach the following matrix.

As you can see our solution is x = 15, y = - 11 or (15, - 11).
Answer:
4
Step-by-step explanation:
I'm pretty sure theres a graph to this so....
The given parabolic graph of quadratic function
To find:What is F(6) for the quadratic function
Solution:We have given graph of quadratic function
there is a different value for Y and a different value for X
For f(6)
here X=6, need to find graph of quadratic function
X=6
f(6)=4
Y=4
Your welcome :)
Answer:
x = -1, -5
Step-by-step explanation:

Hope it helps.
Don't forget to click the "Brainliest" button if you like my answer.
Answer:
x = 5/-6 + (√13)/-6
x = 5/-6 -(√13)/-6
Step-by-step explanation:
2x^2 = -x^2 - 5x - 1. Subtract 2x^2 from both sides.
-3x^2 - 5x - 1. Do the quadratic formula.
That gives you:
-5/6 ± (√13)/-6.
Kaitlin bought 4 pounds of coffee.
70-39.24=30.76
30.76 ÷ 7.69= 4