英语翻译Since the beginning of the year,the number of articles on Randy's website has doubled during every 2-month period of time.If there were 7200 articles on Randy's website at the beginning of July,how many articles were on Randy's website at
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英语翻译Since the beginning of the year,the number of articles on Randy's website has doubled during every 2-month period of time.If there were 7200 articles on Randy's website at the beginning of July,how many articles were on Randy's website at
英语翻译
Since the beginning of the year,the number of articles on Randy's website has doubled during every 2-month period of time.If there were 7200 articles on Randy's website at the beginning of July,how many articles were on Randy's website at the beginning of Jaunary?
英语翻译Since the beginning of the year,the number of articles on Randy's website has doubled during every 2-month period of time.If there were 7200 articles on Randy's website at the beginning of July,how many articles were on Randy's website at
翻译:今年初开始,Randy的网站上文章的数量,每两个月翻一倍(即变成原来的两倍).若7月初,Randy网站上油7200篇文章,那么在一月初他网站上有多少文章?(January,你错拼成了Jaunary)
一月初到七月初经历了6个月,每两个月翻一番,所以翻了6÷2=3次,
七月时有7200,
所以一月时有7200÷2÷2÷2=900篇
题目意思理解清楚就好啦,不难
从今年开始,Randy的网站的文章数每两个月增加两倍,如果7月初的时候网站有7200篇文章,那么在今年1月初的时候曾有多少篇文章?
设今年年初的文章数为x,7月初即6月底有4x篇文章,即7200篇,可得1月初文章数
今年以来,randy(一人名)的网页文章数量每两个月翻一倍,如果randy的网页在今年七月初有7200个文章,那么今年一月初的时候randy的网页的文章有多少个?
7-1÷2=3
2的三次方等于8,也就是说翻了8倍。7200除以8等于900个
从今年开始,Randy的网站的文章数每两个月翻一番,如果7月初的时候网站有7200篇文章,那么在今年1月初的时候曾有多少篇文章?
设今年一月初的文章数为x,两月底为2x,四月底为4x,六月底为8x,8x=7200,x=900
你好,压强为压力比受力面积,即p=F/S,其中S是指接触面积。
因为接触面积最大为水平面的面积0.1m^2
所以最小压强p=10/0.1=100;
如果水平面没有完全被压住,则压强会大于100
所以选择(B)