>
数学
>
Of all the triangles whose all sides are integers,how many triangles whose sides are 9 and 12?
A.21 B.3 C.17 D无数
人气：254 ℃ 时间：2020-06-05 06:04:21
解答
C
三角形两边之和大于大于第三边,两边之差小于第三边,所以第三条边的长度是4-20间的所有整数,共17个.
推荐
用where,what,when,how many,which,how often,whose,how等词填空
how many triangles(三角形) are there in the picture?
How many triangles are there?的中文是什么?
Whose turtle has triangles?怎么答
选词填空 Whose What Who Which Where How much How many How old How
he was ___ (too much,much too) worried about his son.请问此处填啥?
一元二次方程kx2-（2k-1）x+k+2=0，当k为何值时，方程有两个不相等的实数根？
怎样让在地震中的房屋不容易倒塌
猜你喜欢
可恶的数学题
将28g KOH溶于水配制成1L 溶液，此KOH溶液的物质的量浓度是（ ） A.0.5mol•L-1 B.1mol•L-1 C.2mol•L-1 D.4mol•L-1
in my o____ it is a good plan but hard to carry out
用1，2，3，4，5，6，7，8，9这九个数字写出三个大小相等的分数．（每个数字只允许用一次）． 例如：3/6＝7/14＝29/58．
已知二元一次方程2x-4y=5,用含y的代数式表示x,x=______;当y=-2时,x=________.
I when to Beijing when I was young这句对不
已知ai∈R+,且a1+a2+...ai=1 求证:(a1+1/a1)^2+(a2+1/a2)^2+...+(an+1/an)^2>=(n^2+1)^2/n
高一上学期语文要背的课文
© 2026 79432.Com All Rights Reserved.
电脑版
|
手机版
