So Ross details cars. He has gotten $10, $12, $15, $18, and $20. How much does he have to charge for the next car to get a mean
1 answer:
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Answer:
if union, U means plus,+
if intersect means minus, -
Answer:
x = 53
y = 30
Step-by-step explanation:
Step(I):-
Given equations are
x -2y =-7 ...(I)
5x-9y =-5 ..(ii)
The matrix form AX = B
The determinant
By using Cramer's Rule
Δ₁ =
The determinant is Δ₁ = -9 X -7 - (10 ) = 53
x = Δ₁ / Δ
x = 53
The determinant
Δ₂ =
Δ₂ = -5 +35
y = Δ₂/Δ = 30