Thus 90lbs of the 90 cent and 10lbs of the 40 cent.
The ratio of the number of coins to the number of notes Mrs James has in her purse is 2 : 5.
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Thus 90lbs of the 90 cent and 10lbs of the 40 cent.
Answer:
True
Step-by-step explanation:
Do the working for it and youll find the answer
The linear combination method is the same as the elimination method. Let's multiply the second equation by -2 so the x terms cancel each other out. When we do that we get a system of 
and 
. The x-terms cancel each other out giving us 
and y = -3. Now sub -3 into one of the equations to solve for x. x+2(-3)=-4, and x - 6 = -4. x = 2. So the solution for our system is (2, -3)