amandarenee4296
18.07.2019 •
Mathematics
The roof at a tennis stadium opens 421 inches in 50 seconds how many inches does the roof open per second
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Ответ:
50 sec/421 inches = 1 sec/?
? = 421/50
? =8.42 inches
8.42 inches per sec
Ответ:
2x-125=400
Add 125 to both sides
2x-125+125=400+125
2x=525
Divide both sides by 2
2x/2=525/2
x= 262.5
Let me check if my work is good
2(262.5)-125=400
525-125=400
400=400
So yes , my answer is good and I hope its help !