1.Half a number squared decreased by four to forth is thirty-three.2.Five times a number increased by five is seventy-five.3.A number to its square root times double the reciprocal of the number is one forth.如何用数学式子表达以上题目?

if you take away half of a number是什么意思 One-half of a number is 17 more than one third of that number .What is that number? lf half of a number is 30,then three-quarters of that number is------.它的中文 If half of a number is 30,then three-quarters of that number is _______.为什么是45? if you take away half of a number , the number becomes nothing , what's the number?A 8 B 7 C 2 D 4 ,选哪一个,为什么? if you take away half of a number,the number become nothing,what's the number? A.8 B.6 C.2 D.4应该选什么? Brain Teasers:What number has nothing left if you take a half from it? 1.Half a number squared decreased by four to forth is thirty-three.2.Five times a number increased by five is seventy-five.3.A number to its square root times double the reciprocal of the number is one forth.如何用数学式子表达以上题目? half a a half half a a half Which is the smallest number of the four?A.two-thirds B.a half C.a quarter D.three-fourths Which is the biggest number of the four?A.One- third B Two thirds C A half D A quarter ___of the students in our class is fifty four and___of us are girlsA.the number,two thirds B.the number two third C.A number,two half D.A number three quaters Half of the students in a calss are girls.if the number of boys was twice as large and the number of girls half as large,what would the percentage of boys in the calss become? 译：An hour later,a number of passengers equal to half theAn hour later,a number of passengers equal to half the number of minutes past the hour get off...but three times as many plus six get on.At the second stop half the passengers plus two get o a number