Using Cramer's rule to solve linear systems.
1 answer:
Answer: Last Option

Step-by-step explanation:
Cramer's rule says that given a system of equations of two variables x and y then:


For this problem we know that:

Solving we have:


Solving we have:


Solving we have:

Finally


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Answer:

Step-by-step explanation:
Since perimeter,
and we know that P=2(l+w) then 
The length will be 
Now 
Answer:
2:3:5 = 480:720:1200
(a) 480+720+1200
(b) 480
(c) 720/(a)
Step-by-step explanation:
Answer: -4
Step-by-step explanation:
3x + 4 = -8
3x= -12
x = -4
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Answer:
6.06
Step-by-step explanation:
Simple subtraction.
Answer:
35 inches
L×W=A
length×width=area