Switch y=2x+7 to 2x-y=-7 then multiply that equation by 2 to cancel out the y's. that ends up as 4x-2y=-14 which then you get x=-24. then you substitute x into one of the original equations y= 2(-24)+7 which equals y=-41
Answer: Sally walked 3 minutes faster per mile
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Answer:
it’s going up by 3 boys per girl!
Step-by-step explanation:
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The answer to your question should be "<span>Both weight and mass are used equally by scientists"</span>
Answer:
y= 25x
Step-by-step explanation:
