1）（30-24）÷30=20%
2）5×6：8×5=30：40=3：4
3）3x=4y=7z的最小值是147,此時(shí)x+y+z最小,且=28+21+12=61
4）開門9小時(shí)后商店里面的顧客人數(shù)：100×9-20×2×9=540
5）第五題是多少？還沒看出來看出來了嗎？我想了很久都沒想出來，拜托了！你第五題的題目沒寫錯(cuò)嗎沒有寫錯(cuò)，對(duì)了，我不能再追問了，否則就要花財(cái)富值了，要說就一次說完吧。
5道英語數(shù)學(xué)題,
5道英語數(shù)學(xué)題,
1）if the price of an item(商品) decrease from(減少) $30 to $24,what is the percent(百分?jǐn)?shù)) decrease in price?
2)what is the ratio(比) of the perimeter(周長) of a pentagon(五邊形) with each side(邊長) of length(長度) 6 to the perimeter of an octagon(八邊形) with each side of length
3)if x,y and z are positive integers(正整數(shù),不為0),and 3x=4y=7z .then what is the minimun value(最小值) of x+y+z?
4）A shop opens at 10:00 am and closes at 6:00 pm.About 100 customers enter into this shop per hour averagely,and about 20 customers will leave the shop per half hour averagely.Then this day,the shop opens at 10:00 am as usual,please count how many customers left in the shop after 9 hours?
5) 17 10又1\4 15又1\4 11又3\4 13又1\2 13又1\4 11又3\4 _____
1）if the price of an item(商品) decrease from(減少) $30 to $24,what is the percent(百分?jǐn)?shù)) decrease in price?
2)what is the ratio(比) of the perimeter(周長) of a pentagon(五邊形) with each side(邊長) of length(長度) 6 to the perimeter of an octagon(八邊形) with each side of length
3)if x,y and z are positive integers(正整數(shù),不為0),and 3x=4y=7z .then what is the minimun value(最小值) of x+y+z?
4）A shop opens at 10:00 am and closes at 6:00 pm.About 100 customers enter into this shop per hour averagely,and about 20 customers will leave the shop per half hour averagely.Then this day,the shop opens at 10:00 am as usual,please count how many customers left in the shop after 9 hours?
5) 17 10又1\4 15又1\4 11又3\4 13又1\2 13又1\4 11又3\4 _____
英語人氣：315 ℃時(shí)間：2020-06-27 09:43:20
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