1．　If　x　and　y　are　integers　and　xy＋x＾2　is　oddh　which　of　the　following　statements　must　be　true?①　x　is　odd②　y　is　odd③　x＋y　is　oddA．　①B．　③C．　①　and　②D．　①　an

紧急!12月考 20135月SAT数学If the circumference of a cir le is doubled when its radius r is increased by 4 inches, what is the value of r, in inches?3y=2x-6 y=1-cxIn the equations above,x and y are variables and c is a constant. If no ordered three grades of milk are 1percent,2percent,3percent fat by volume,if x gallon of 1 percent,y gallon of 2percent and z gallon of 3percent are mixed to give x+y+z gallons of a 1.5percent grade ,what is x in terms of y and if the tens digit x and the units digit y of a positive integer n are reversed,the resulting intger is 9 more than n.What is y in terms of a 10-x b 9-x c x+9 d x-1 e x+1 1.In a group of six people,two have a mass of 60kg while three have a mass one and half times that.what is the mass of the sixth person if the average group mass is 70kg?2.There are x dimes and y nickels in bag A and x nickels and y dimes in bag B.Th 1．　If　x　and　y　are　integers　and　xy＋x＾2　is　oddh　which　of　the　following　statements　must　be　true?①　x　is　odd②　y　is　odd③　x＋y　is　oddA．　①B．　③C．　①　and　②D．　①　an GMAT If x and y are positive integers,and x^3*y^4=2000.What is the value of xy?这个...有木有技巧... In the figure above,AB and CD are parallel.What is x in terms of y and z 英语翻译if a and b is the roots of the quadratic equation x（2x-7）+1=0,form a quadratic equation in x whose roots are the neagtive of the reciprocals（倒数） of a and b 一道GMAT数学题求解.If y≠3 and 3x/y is a prime integer greater than 2,which of the following must be true?1.x=y2.y=13.x and y are prime integers.A NoneB 1 onlyC 2 onlyD 3 onlyE 1 and 3答案给出的是A，我觉得选B，请问条件1有什 In a triangle ,if measures of there angles are x,2x and 3x respectively,then the measure of is()翻 In a triangle ,if measures of there angles are x,2x and 3x respectively,then the measure of is()翻 if x and y are the tens digit and the units digit, 求翻译!if x and y are the tens digit and the units digit, respectively, of the product 725,278X(这个是乘号）67,066,what is the value of x+y? SAT Math求翻译和解析In the exact middle of a certain book, when the page numbers on the facing pages , x and x+1, are multiplied together , the product is 210. if all of the pages are numbered in order, How many numbered pages are in the book ? The coordinates The coordinates x and y are measured in feetx是水平前进,y是垂直前进 gmat数学DS部分 prep上的一道题,gmat数学DS部分 prep上的一道题,也看不到答案.177.If x and y are positive integers,what is the value of xy (1) The greatest common factor of x and y is 10.(2) The least common multiple of x and y is If dy/dx=2y^2 and if y= -1 when x=1,then when x=2,y=? 英语翻译If w=x+y+z,what is the average(arithmetic mean) of w,x,y,and z in terms of If x and y are positive integers such that x=8y+12,what is the greatest common divisor of x and 1) x=12u,where u is an integer2) y=12z,where z is 由题知:x=4(2y+3)由(1)知:x=12u 则y=3k k is an integer.x=12(2k+1) 则x,y最大公因子不能确定.