Answer:
x (Falafel) = $5.50
y (Turkey BLT) = $7.50
z (Paninis) = $6.00
Step-by-step explanation:
Step 1: Write out systems of equations
5x + 15y + 20z = 260
8x + 18y + 14z = 263
12x + 16y + 12z = 258
There are multiple ways to solve for this systems of equations. I will use an augmented matrix for this:
Top row: [5 15 20 | 260]
Middle row: [8 18 14 | 263}
Bottom row: [12 16 12 | 258]
We find RREF form of the augmented matrix to find our answers:
Top row: [1 0 0 | 11/2]
Middle row: [0 1 0 | 15/2]
Bottom row: [0 0 1 | 6]
And we have our answer!
See that denominator cannot be zero, so,
x-3 ≠ 0
x ≠ 3
Domain:
S={x∈R/x≠3}
Answer:
(2,2), 24 units squared
Step-by-step explanation:
D is at (2,2) because it would make Line AD equal to line BC and line AB equal to line CD, which would make a rectangle.
Area= length x width
A= 6 x 4
A=24 units squared
Good Luck!
2 and 1/4 inches.
Decimal equals 2.25 inches
