译林版七年级上册英语

find [f(x+h)-f(x)]/h,h≠0,for the functions defined as follows:(a) f(x)=2x2-3x(b) f(x)=4x-3x2(c) f(x)=x^3求详细过程（不需要英语）(a) f(x)=2x^2-3x(b) f(x)=4x-3x^2(c) f(x)=x^3 Bill,George,Sally and Ann are brothers and sisters ,One of them is 15,one is 12.One of the boys is 13,and one of the girls is 14,Bill is older than Sally but Ann isn't.How old are they?Bill is George is Sally is Ann is Find the volume obtained when the region between the graph of y =根号（x2 + 1） and the x-axis,between x = 3 and x = 4,is rotated around the x-axis.和微积分有关~ 6、Al and bill live at apposite ends of the same street.Al had to deliver a parcel at bill’s home,Bill one at Al's home.they started at the same moment,each walked at constant speed and returned home immediately after leaving the parcel at its des 英语翻译1、The three sides of a triangle are of lengths 1,m,n,respectively.The numbers 1,m,n are positive integers,1 less than or equal to m less than or equal to n .Take n=9 and find the number of different triangles of the described kind.2、A 英语翻译 英语翻译Raymond and Allan are play cards.They take nine cards with one to nine numbers and laid them facing downward.They draw out any two pieces of cards,if the sum of points is bigger than 10,Raymond will win;if it si less than 10,Allan will wi 英语翻译 John and Jay run the 220-yard dash ,and Jay wins the race by 10 yards .if Jay runs the race in 30 seconds ,what is the rate of each boy in yards per second?how long would it take John to run the 220-yard dash? Steve ,a cyclist ,leaves the corner of first and maple on his bicycle and travels 9 mph .two hours later his brother leaves form first and maple and comes after him on a moped traveling 27 mph .how long will it take him to catch up with Steve John and Jay run the 220-yard dash ,and Jay wins the race by 10 yards .if Jay runs the race in 30 seconds ,what is the rate of each boy in yards per second?how long would it take John to run the 220-yard dash? 英语翻译—— —— —— ——to work out the math problem. f :x (这有一个向右的箭头）3-2x(1) calculate f(2)(2)express f(右上方有一个-1的符号）in the form of f(右上方有一个-1的符号） :x (向右的箭头) 谁能解出这道数学题英语怎么说 求解这道数学题,英文的哦. A blimp travels 2 hours with the wind and 5 hours against it 麻烦解决英文数学题1.I have a triangular graden in my backyard.One side is 4 meters and another side 6 meter.The angle that is formed by these two sides is 72 degreees.What is the area of the garden?2.Jill's car tires are spinning at a rate o 一道英语说明的数学题If a number eight times as lagre as x,is increased by two,then one fourth of the result equals( A:2x+1/2 B:x+1/2 C:2x+2 D:2x+4 英语的数学题(求解释)14% of 6 kg =_____g 26% of 5 m =_____cm(里面的of是什麼意思,...在这里先谢谢) 请详细的给我解释一下这道数学题（翻译成英语） 一道英语的数学题,我不大明白意思One factor of x^2+2x-8 is:A.x-1B.x-2C.x-4D.x-6E.x-8请问one factor是啥意思?怎样翻译这道题呢?我不大理解 英文的数学题 就是细致点 1.What is the maximum number of cubes with sides of a length that could fit inside a cube with sides of length 2s?2.Exactily three years before the year in which Anna was born,the year was 1980-x.In terms of x,on Anna's twentieth birthday,the year wi 向爸爸借了500,向妈妈借了500,买了双皮鞋用了970.剩下30元,还爸爸10块,还妈妈10块,自己剩下了10块,欠爸爸490,欠妈妈490,490＋490=980.加上自己的10块=990.还有10块去哪里了呢? 一道数学题,知答案者请详细讲解.明明的爸爸2008年存了年利率为百分之2点79的两年期存款,到期后扣除了百分之5的利息税,所得的钱刚好为明明买了一个价值150点03元的计算器,明明的爸爸存入 A,B两地相距30米,张,王两人分别从两地同时出发往返于A,B之间,张每秒行2米,王每秒行3米,一分内他们相遇（）次.不要抄袭网上的。 如图,整个回字形的长为8M,宽为7M,一个人从入口A沿道路中央走到终点B,他共走了?答案是56M, 如下图,平行四边形ABCD的周长是75厘米,AE=14厘米,AF=16厘米,平行四边形ABCD的面积是多少平方厘米?（提示：平行四边形面积一定,底和高成反比例）（如果是列方程的话,请不要设两个未知数,我还 数学题 生产零件 知答案者请详细讲解甲乙丙三人在同一时间内共生铲了1个零件,已知甲乙两个人工作效率的比是6比7,丙的工作效率是甲乙两人工作效率的5分之4,3人个生产了多少个零件? 在一个活动中某同学进行了统计,得到了3条信息：1.甲班共捐款300元,乙班共捐款232元；2.乙班平均每人捐款是甲班平均每人捐款钱数的0.8倍；3.甲班比乙班多2人.请根据以上三条信息求出甲班 设f(x)是定义在R上的偶函数,且f(x-1)=f(x+1),当x属于[2,3]时,f（x）=x,则当x属于[-1,0]时,f(x)的解析式是?-X+2 一个三位数,各数位上的数字分别是a、b、c,已知a、b、c互不相等,且均不为0,用a、b、c组成的所有三位数的和为5328.则这个数最小是（ ）