Rosana used linear combination to solve the system of equations shown. She did so by multiplying the second equation by a certai n number to eliminate the y-terms. What number did Rosana multiply the second equation by?
1 answer:
She multiplied it by 5, because that would make the equation: 2.5 + y = 125 So when we add -y and y cancel out
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Answer:
89.125%
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I believe the answer is E. Hope this helps!:)
Answer:
x = 2.5
Step-by-step explanation:
10=2x+5
-5 -5
5 = 2x
----------
2 2
2.5 = x
Answer:
153
Step-by-step explanation: