If and xy=4, then 7y+2x=

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问题 If

and xy=4, then 7y+2x=

选项 A、
B、
C、
D、
E、

答案A

解析 If you multiply xy times both sides of the first equation, you get 7y+2x=7xy. You know that xy=4, so 7y+2x=7(4)=28.

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If and xy=4, then 7y+2x=

GMAT QUANTITATIVE

GMAT

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InWesternculture,anengagementbeginswith"yes"toasimplequestion:"Willyoumarryme?"Theseheart-stoppingwordsoften

Iarrivedlate,I______thetraffictobesoheavythismorning.

Theygotoworkeveryday______SaturdayandSunday.Thosedaysareholidays.

LivinginthecentralAmericandeserthasitsproblems,______obtainingwaterisnottheleast.

Newspapersarenotnearlyaspopulartodayastleywereinthepast.Therearenotverymanypeoplewhoseriouslyreadanewspa

IntheUnitedStatesduring1992,anyfamilyoffourwithanannualcashincomeoflessthan$14,335(beforetaxes)wasconsider

Ourpreferencesforcertaincolorsare______accordingtothepassage.Whichofthefollowingcouldbethemostsuitabletitle

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肌电图或神经系统诱发电位，主要是检查

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男孩，10岁。反复低热伴头痛3月余，头痛加剧伴视力障碍1周。眼科检查发现神经乳头水肿；脑脊液涂片墨汁染色见厚荚膜发亮圆形菌体。最可能的诊断是

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If and xy=4, then 7y+2x=

GMAT QUANTITATIVE

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Gestures,abodylanguageofhumanbeings,______widelyfromculturetoculture.

InWesternculture,anengagementbeginswith"yes"toasimplequestion:"Willyoumarryme?"Theseheart-stoppingwordsoften

Iarrivedlate,I______thetraffictobesoheavythismorning.

Theygotoworkeveryday______SaturdayandSunday.Thosedaysareholidays.

LivinginthecentralAmericandeserthasitsproblems,______obtainingwaterisnottheleast.

Newspapersarenotnearlyaspopulartodayastleywereinthepast.Therearenotverymanypeoplewhoseriouslyreadanewspa

IntheUnitedStatesduring1992,anyfamilyoffourwithanannualcashincomeoflessthan$14,335(beforetaxes)wasconsider

Ourpreferencesforcertaincolorsare______accordingtothepassage.Whichofthefollowingcouldbethemostsuitabletitle

Inmakingmarketinvestigation,oneshould______.Allthefollowingarechannelstogetmarketinformationexcept______.

Solvetheproblemandindicatethebestoftheanswerchoicesgiven.NUMBERS:Allnumbersusedarerealnumbers.FIGURES:

党的思想路线的基本内容是统一的整体，其实质和核心是()

肌电图或神经系统诱发电位，主要是检查

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ReadtheletterbelowtoTimGreenfromDingForest.DearMr.Green,Iamwritingtoinquireaboutyourlatestslimmingmachine.

A、Themanisopposedtodrinking.B、Lastyear’sChristmasdinnerpartywasasuccess.C、Thewomandoesnotwanttogotothisye

Inmakingmarketinvestigation,oneshould.Allthefollowingarechannelstogetmarketinformationexcept.

采用白盒测试方法对下图进行测试，设计了4个测试用例：①(x=0，y=3)，②(x=1，y=2)，③(x=一1，y=2)，④(x=3，y=1)。至少需要测试用例①②才能完成_覆盖，至少需要测试用例①②③或①②④才能完成_覆盖。(