If a and b are non-zero real numbers and (1-99a)(1+99b)=b,then the value for 1／a-1／b+1 is( )(a)1 (b)100 (c)-1 (d)-100

If a and b are non-zero real numbers and (1-99a)(1+99b)=b,then the value for 1／a-1／b+1 is( )(a)1 (b)100 (c)-1 (d)-100 If A×B=6(A-B),what are the minimum values of A and 英语实践：If all the letters were asked to a tea party,which letters would be late?A.U and Z.B.X,Y and Z.C.U,V,W,X,Y and Z.D.W,X and Z. 类Teacher和Student是类Person的子类Person p; Teacher t; Student s; //p,t and s are all non-null.if(t instanceof Person) { s = (Student)t; } 最后一句语句的结果是：A、 将构造一个Student对象； B、 表达式是合法的； C、 Let X and Y be vectors in R^3 which are non-collinear with the origin,and let Z be a vector in R^3 that does not lie on the plane spanned by X and Y.Then it is possible to express any other vector V in R^3 as a linear combination of X,Y,and Z. 短文If you are a non-English speaker,you may find that learning English is not an easy job.答 If all the letters were asked to a tea party,which letters would be late?A.U and Z B.X,Y and Z C.U,V,W,X,Y,and Z D.W,X and Y 英语翻译CT discovers the mutti-talent of non-ionic low osmolar contrast media：Non-invasive angiography and the visualization of perfusion,permeability and interstitial space.Non-ionic contrast media are the current end point of a development wh 1.Does formula f(x)=1/(x²-2) define a function f:R->R?A function Z->R?2.If there are 2187 function f:A->B and |B|=3.What is |A|?3.Give an example of a function f:A->B and A1,A2 in the A for which f(A1∩A2) ≠ f(A1)∩f(A2)4.If A={1,2,3,4,5} an 英语翻译The semi-rigid twist-beam suspension consist of two non-flexible and non- torsional railing links which are connected by a welded,non-flexional but twisting transverse profile.The advantage of this suspension concept is the simple space-s They are faced with the same kinds of challenges and problems after graduation__we are.A.as if B.even if C.as D.when Sequences and Series (001)If the first,fifth and tenth terms of an arithmetic progression are in geometric progression and the sum of the second and eighth terms is 20,find the first term and the (non-zero) common difference. If A and B are mutually exclusive events where P(A)=0.2andP(B)=0.3,then p(A and B) is If A and B are independent events where P(A)=0.8,and P(B)=0.5,then P(A or B) is 急 英语翻译Get nominated for a degreeGET YOUR DIPLOMA TODAY!If you are looking for a fast and effective way to get a diploma,(non accredited) this is the best way out for you.Provide us with degree you are interested in.Call us right now on:For US:1 英语翻译guarantees for 90 days as per the following conditions:Our guarantee is applicable only if the candidate referred by is terminated as a result of non-performance.Our guarantee terms will be valid only if our fees and accounts are settled 求问一道GMAT数学题!貌似挺简单= =就是卡在这了If 2, x, y, and z are different positive integers whose average (arithmetic mean) is 10, what is the greatest possible value of z ?A. 10B. 24C. 34D. 36E. 40 if a and b are both positive intergers and a平方-b平方=7 .what is the value of a