Answer:
Step-by-step explanation:
<u>System Determinant</u>
The determinant of the system is the determinant of the matrix of coefficients:
<u>X Determinant</u>
This is the determinant of the matrix with the x-coefficients replaced by the constants.
<u>Y Determinant</u>
This is the determinant of the matrix with the y-coefficients replaced by the constants.
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This problem didn't ask, but the solution is ...
x = Dx/D = -4/-2 = 2
y = Dy/D = -2/-2 = 1
(x, y) = (2, 1)
The correct answer to your question is A) y(12-x). How?? well, 12 dollars is how much she sells them for, and you would need to subtract the amount of money to make the scarves from the 12 dollars which means 12-x, then you multiply it all by y which is the number of scarves Penny sells meaning the equation is y(12-x) or option 1
Answer:
x > 1/4
Step-by-step explanation:
Answer:
29622 m^2
Step-by-step explanation:
SA = 2 ( lw+ wh+ lh) where l = length w = width h = height
SA = 2 ( 81*75+ 75* 56+ 81*56)
= 2 (6075+4200+4536)
= 2(14811)
29622
Answer:
C
Step-by-step explanation:
100/2 = 50. 50-6 = 44
