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I need help with these questions its a bit hard to understand ill mark you the brainiest whos ever answer is in full sentence and makes sense

I need help with these questions its a bit hard to understand ill mark you the brainiest whos ever answer is in full sentence and makes sense class=

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maggielee724

Answer:

Step-by-step explanation:

1. 520/13=40

140/7=20

40*20=80

2. 300*150=45000

   45000*6=270000

3. 230-70*2=90

   90/2=45 (width)

   70*45=3150(area)

 

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