Two numbers have a difference of 15 and a product of 199.75.The larger of the two numbers is x.(a) Show thatx2 – 15x – 199.75 = 0(3)(b) Solve the equationx2 – 15x – 199.75 = 0X2是 X的2次方

oh, dear, I forgot the two _____? a. room's nubmer b, rooms' number C room numbers d rooms' numbers oh ,dear,i forgot the two ______.A.room's mumber B.rooms' number C.room numbers D.rooms' numbers并说明为什么， Oh,dear,I forgot the two() A.room's number B.rooms' number C.room numberS D.rooms' number I have forgotten both of the＿.A.room numbers B.I have forgotten both of the＿.A.room numbers B.rooms number C.rooms numbers D.room number（答案并解释其原因） 英语语法29_____bears’ numbers have increased,so have conflicts with local people.A.When B.For C.As D.While #include stdio.h main() { int a,b,sum;#include stdio.hmain(){int a,b,sum;printf(Enter two numbers: );scanf(%d%d,&a,&b);for(;a 选择填空：I have _____holiday.A.two-weeks B.a two-weekC.two weeks D.a two-weeks. I have () holiday.A:two months B:two month′s C:two-month D:a two-month Tom said they wound have ____ holidayA、a two month B、two months C、two-months D、 two month's 1.I forgot their__,or I would have telephoned them.A telephone's number B telephones numbersC telephone numbers Dtelephones' numbers2.-Is your school far from here?_Yes,it's ___.A a day or two's ride B a stone's throw C about 300 miles' away D 40 min Did you____ last month?说明理由A.have two days' off B.have two day's off C.take two day off D.have two days off Jim was late for two classes this morning. He said that he forgot both of the ______.a. rooms number b. room number c. room’s numbers d. room numbers高手请给个正确答案 Jim was late for two classes this morning.He said that he forgot both of the ______.2012-01-27 | 分享a.rooms number b.room number c.room’s numbers d.room numbers The sum of two facing pages of a book is 342.Find the two page numbers. We ____ here two hours ago.We ____ here for two hours.A.have arrived;have beenB.have come;have beenC.came;have come D.arrived;have been Two numbers have a difference of 15 and a product of 199.75.The larger of the two numbers is x.(a) Show thatx2 – 15x – 199.75 = 0(3)(b) Solve the equationx2 – 15x – 199.75 = 0X2是 X的2次方 I have a bad cold.I want to ask for＿leave. A.two days B.a two-days C. a two-day D.two-day May I help you ,madam I 'd like to have ( )those eggs.A.two dozen of B.two dozens C.two dozens of D.two dozen