优课网
首页
数学
语文
英语
化学
物理
政治
历史
生物
首页
> 若a,b为有理数,且9+27+12=a+b3,则以a,b为两条直角边的直角三角形的斜边长c=______.-数学
若a,b为有理数,且9+27+12=a+b3,则以a,b为两条直角边的直角三角形的斜边长c=______.-数学
题目简介
若a,b为有理数,且9+27+12=a+b3,则以a,b为两条直角边的直角三角形的斜边长c=______.-数学
题目详情
若a,b为有理数,且
9
+
27
+
12
=a+b
3
,则以a,b为两条直角边的直角三角形的斜边长c=______.
题型:填空题
难度:中档
来源:不详
答案
∵
9
+
27
+
12
=3+3
3
+2
3
=3+5
3
=a+b
3
,
∴a=3,b=5,
则以a,b为两条直角边的直角三角形的斜边长c=
3
2
+
5
2
=
34
.
故答案为:
34
.
上一篇 :
The photome my childhood.A.re
下一篇 :
Mr. Smith was very disappoin
搜索答案
更多内容推荐
x+xyxy+y+xy-yx-xy-数学
________ to the hospital, the badly injured woman was immediately operated on so that she could be s
The hard life in the mountainous area he has adapted to ____ a real challenge to anyone. A.meanB.mea
计算:(1)28-18+12(2)tan60°+2sin45°-2cos30°-数学
No decision _____ about any new operations until we have discussed all the details. A.is madeB.is b
20. He reads newspapers every day to keep himself_______about what's going on in the world.A.in
—I phoned you at 7 yesterday evening but nobody answered.— Oh, I ______ my dog in the park then.A.wa
若a,b为有理实数且4-18+12=a+b2,则a+b=______.-数学
Before joining the Department of Defense, Mr. Panetta _______ as director of the CIA from February 2
—May I use your car this afternoon?—Sorry. It broke down this morning again. I’ll have it ________.A
(23x9x+6xyx)-(x21x-yyx).-数学
By the end of this year, a new library ________ in our school.A would be completedB will have been c
He said that he _______ to Shanghai the next day. A would go B went C had gone D would have gone -高三
I will stay at home and read some books if it ________ tomorrow. A.rainB.will rainC.rainsD.is going
With the fast development of computer and Internet technologies, traditional printed books ______ by
Nowadays, we can obviously feel that the Net_______ our life rapidly. A.had changedB.changedC.is cha
“Mom_______ the supermarket,” the daughter said to her father.A.has gone toB.has been toC.goes toD.g
At this time tomorrow ______ over the Atlantic. A.we’re going to flyB.we’ll flyC.we’ll be flyingD.we
(1)计算:22+32=______.(2)已知方程:x2-1=0,则x=______.-数学
计算20+|1-27|+35-33+(2-17)0-数学
计算:125-5215+45-12405-数学
计算:(1)23+312-48;(2)(2+23)2.-数学
The price of oil is increasing so rapidly.Indeed ! The oil prices____by 10 and 20 percent so far.A.
计算:13-12=______.-数学
---We’d like a double room with a view , please.---I’m sorry, but all double rooms with a sea view _
The last thirty years _____ the greatest number of laws stopping our rights and progress,until today
It is said that his health ______ by years of hard working. A.has been destroyedB.has destroyedC.is
.When Bill Gates decided to stop schooling and created Microsoft in 1975, he ______ law at Harvard U
计算:12-6127-tan30°-数学
计算12-12-3+|-2|+8-数学
Shedown beside me and soon got into sleep.A.liedB.laidC.layD.lain-高二英语
She went to American two years ago .She ____there for half a year and then went to Japan.A. would wo
Would you please keep silent? The news that the milk contains a harmful chemical _________and I want
Ladies and gentlemen,please fasten your seat belts,the plane______.A.takes offB.is taking offC.is go
In recent years many football clubs ______ as business to make a profit.A.have runB.have been runC.h
计算:(1)sin60°cos30°-tan45°;(2)32-218+12.-数学
化简计算:110200-20.08-412+2572-数学
Nothing _______ clear about the meeting.A.has madeB.has been madeC.has doneD.has been done-英语
(1)求值:2sin30°+4cos60°+tan45°(2)计算:8+18-322(3)解方程:2x2-x-2=0.-数学
计算:(24-12)+(2+54)-数学
计算:35-25=______.-数学
They waited at the bus stop and about five minutes later the bus they wantedalong.A.comingB.cameC.to
-----Is this the first time you______ Chengdu?-----No. But the first time I______ here, the city was
This is the first time that I ______ at the meeting.A.had spokenB.have spokenC.has speakingD.was spe
Nowadays it is obvious that the Internet _______ our life rapidly.A.would changeB.changedC.had chang
We agreed ______ here but so far she hasn’t turned up yet.A.having metB.meetingC.to meetD.to have me
The hotel in Nanchong wasn’t particularly good. But I ____ in many worse hotels.A.was stayingB.staye
---Do you know the timetable of the school bus? ---Sure, the first trip________ at 6:30 a.m. and usu
One learns a language by making mistakes and ______ them.A.correctsB.correctC.to correctD.correctin
计算:220+45-25=______.-数学
返回顶部
题目简介
若a,b为有理数,且9+27+12=a+b3,则以a,b为两条直角边的直角三角形的斜边长c=______.-数学
题目详情
答案
∴a=3,b=5,
则以a,b为两条直角边的直角三角形的斜边长c=
故答案为: