用计算器计算下面各题.1÷15=2÷15=3÷15=4÷15=5÷15=6÷15=7÷15=8÷15=9÷15=10÷15=11÷15=12÷15=13÷15=14÷15=15÷15=你发现了什么?你能很快算出下面各式的商吗?23÷15=37÷15=47÷15=69÷15=154÷15=
用计算器计算下面各题.1÷15=2÷15=3÷15=4÷15=5÷15=6÷15=7÷15=8÷15=9÷15=10÷15=11÷15=12÷15=13÷15=14÷15=15÷15=你发现了什么?你能很快算出下面各式的商吗?23÷15=37÷15=47÷15=69÷15=154÷15=
15%15%15%15%是()让步。
15%15%15%15%是()让步。
cos(α-15°)cos(α+15°)+sin(α-15°)sin(α+15°)=______.
cos(α-15°)cos(α+15°)+sin(α-15°)sin(α+15°)=______.
Practice3<br/>Fortherestofthemonth,anepidemic(流行病)willsweepacrosstheUS.Itwillkeepkidshomefromschool.Collegestudentswillignorepilesofhomework.Employeeswillsuddenlylosetheirabilitiestoconcentrate.<br/>Thedisease,knownas“MarchMadness”,referstotheyearly65-teamUSmen’scollegebasketballtournament.ItbeginsonMarch15andlaststhroughthebeginningofApril.Teamscompeteagainsteachotherinasingleeliminationtournamentthateventuallycrownsanationalchampion.<br/>Nearly20millionAmericanswillfindthemselvesprisonersofbasketballfestivalmadness.<br/>Thefuncomespartlyfromguessingthewinnersforeverygame.Friendscompeteagainstfriends,husbandsagainstwives,andcolleaguesagainstbosses.<br/>Big-nameschoolsareusuallyfavoredtoadvanceintothetournament.Buteachyeartherearedarkhorsesfromlittle-knownuniversities.<br/>Thisaddstothemadness.Watchingateamfromaschoolwith3,000studentsbeatateamfromaschoolwith30,000,formanyAmericans,isanexcitingexperience.Lastyear,thelittle-knownGeorgeMasonUniversitywasoneofthefinalfourteams.Manypeoplehadneverevenheardoftheuniversitybeforethetournament.<br/>Collegebasketballplayersarenotpaid,sothegameismoreaboutmakinganamefortheiruniversityandthemselves.Butthatdoesn’tmeanmoneyisn’tinvolved.<br/>About$4billionwillbespentgamblingontheevent.Accordingto<em>MediaLife</em>magazine,theeventwilldrawover$500millioninadvertisingrevenuethisyear,toppingthepost-seasonrevenue,includingthatoftheNBA(全国篮球协会).
Practice3<br/>Fortherestofthemonth,anepidemic(流行病)willsweepacrosstheUS.Itwillkeepkidshomefromschool.Collegestudentswillignorepilesofhomework.Employeeswillsuddenlylosetheirabilitiestoconcentrate.<br/>Thedisease,knownas“MarchMadness”,referstotheyearly65-teamUSmen’scollegebasketballtournament.ItbeginsonMarch15andlaststhroughthebeginningofApril.Teamscompeteagainsteachotherinasingleeliminationtournamentthateventuallycrownsanationalchampion.<br/>Nearly20millionAmericanswillfindthemselvesprisonersofbasketballfestivalmadness.<br/>Thefuncomespartlyfromguessingthewinnersforeverygame.Friendscompeteagainstfriends,husbandsagainstwives,andcolleaguesagainstbosses.<br/>Big-nameschoolsareusuallyfavoredtoadvanceintothetournament.Buteachyeartherearedarkhorsesfromlittle-knownuniversities.<br/>Thisaddstothemadness.Watchingateamfromaschoolwith3,000studentsbeatateamfromaschoolwith30,000,formanyAmericans,isanexcitingexperience.Lastyear,thelittle-knownGeorgeMasonUniversitywasoneofthefinalfourteams.Manypeoplehadneverevenheardoftheuniversitybeforethetournament.<br/>Collegebasketballplayersarenotpaid,sothegameismoreaboutmakinganamefortheiruniversityandthemselves.Butthatdoesn’tmeanmoneyisn’tinvolved.<br/>About$4billionwillbespentgamblingontheevent.Accordingto<em>MediaLife</em>magazine,theeventwilldrawover$500millioninadvertisingrevenuethisyear,toppingthepost-seasonrevenue,includingthatoftheNBA(全国篮球协会).
-4.00-2.00×15/+3.00+1.00×15=()。 A: -1.00+1.00×15 B: +1.00-1.00×15 C: -1.00-1.00×15 D: -l.00-1.00×105
-4.00-2.00×15/+3.00+1.00×15=()。 A: -1.00+1.00×15 B: +1.00-1.00×15 C: -1.00-1.00×15 D: -l.00-1.00×105
根据123×15=1845,写出1.23×15=( ),12.3×15=( ),1230×15=( )。
根据123×15=1845,写出1.23×15=( ),12.3×15=( ),1230×15=( )。
女衬衫前肩斜的比值是( )。 A、15:6 B、15:3 C、15:7 D、15:2.5 A: A、15:6 B: B、15:3 C: C、15:7 D: D、15:2.5
女衬衫前肩斜的比值是( )。 A、15:6 B、15:3 C、15:7 D、15:2.5 A: A、15:6 B: B、15:3 C: C、15:7 D: D、15:2.5
【单选题】15题 A. 15题A B. 15题B C. 15题C D. 15题D
【单选题】15题 A. 15题A B. 15题B C. 15题C D. 15题D
-4.00×15/-2.00×15=()。 A: -4.00 B: -2.00 C: -6.00×15 D: +6.00×15
-4.00×15/-2.00×15=()。 A: -4.00 B: -2.00 C: -6.00×15 D: +6.00×15
已知东十二区是1月1日15:15,则此时西十二区是() A: 1月1日15:15 B: 12月31日15:15 C: 1月1日3:15 D: 12月31日3:15
已知东十二区是1月1日15:15,则此时西十二区是() A: 1月1日15:15 B: 12月31日15:15 C: 1月1日3:15 D: 12月31日3:15