a*g
2 楼
【 以下文字转载自 Seattle 讨论区 】
发信人: ashuang (越忙越年轻), 信区: Seattle
标 题: 急问一道数学题
发信站: BBS 未名空间站 (Sat Jan 21 09:54:44 2012, 美东)
A triangle has two sides measuring 4 and 6, respectively
the greatest possible area of the triangle is 12. why?
another one: a box contains 4 cookies, 5 brownies, and 6 doughnuts. two
items are removed from the bag
which probability is greater?
a. the probability that both items are brownies
b. the probability that one item is a cookie and the other is a doughnut
thanks a lot!!!
发信人: ashuang (越忙越年轻), 信区: Seattle
标 题: 急问一道数学题
发信站: BBS 未名空间站 (Sat Jan 21 09:54:44 2012, 美东)
A triangle has two sides measuring 4 and 6, respectively
the greatest possible area of the triangle is 12. why?
another one: a box contains 4 cookies, 5 brownies, and 6 doughnuts. two
items are removed from the bag
which probability is greater?
a. the probability that both items are brownies
b. the probability that one item is a cookie and the other is a doughnut
thanks a lot!!!
e*7
3 楼
太搞笑了。还有模有样的。
W*g
4 楼
first one:
area= 0.5*a*b*sin (jiajiao)
second one:
a 5/15*4/14
b 4/15*6/14
【在 a*****g 的大作中提到】
: 【 以下文字转载自 Seattle 讨论区 】
: 发信人: ashuang (越忙越年轻), 信区: Seattle
: 标 题: 急问一道数学题
: 发信站: BBS 未名空间站 (Sat Jan 21 09:54:44 2012, 美东)
: A triangle has two sides measuring 4 and 6, respectively
: the greatest possible area of the triangle is 12. why?
: another one: a box contains 4 cookies, 5 brownies, and 6 doughnuts. two
: items are removed from the bag
: which probability is greater?
: a. the probability that both items are brownies
area= 0.5*a*b*sin (jiajiao)
second one:
a 5/15*4/14
b 4/15*6/14
【在 a*****g 的大作中提到】
: 【 以下文字转载自 Seattle 讨论区 】
: 发信人: ashuang (越忙越年轻), 信区: Seattle
: 标 题: 急问一道数学题
: 发信站: BBS 未名空间站 (Sat Jan 21 09:54:44 2012, 美东)
: A triangle has two sides measuring 4 and 6, respectively
: the greatest possible area of the triangle is 12. why?
: another one: a box contains 4 cookies, 5 brownies, and 6 doughnuts. two
: items are removed from the bag
: which probability is greater?
: a. the probability that both items are brownies
S*l
5 楼
twin baby boys have a conversation - part 1
http://www.youtube.com/watch?v=lih0Z2IbIUQ
【在 S*******l 的大作中提到】
: click the following link.
: http://www.youtube.com/watch?v=zeK2y4MBpYE
http://www.youtube.com/watch?v=lih0Z2IbIUQ
【在 S*******l 的大作中提到】
: click the following link.
: http://www.youtube.com/watch?v=zeK2y4MBpYE
a*g
6 楼
谢谢，回头发包子。
【在 W********g 的大作中提到】
: first one:
: area= 0.5*a*b*sin (jiajiao)
: second one:
: a 5/15*4/14
: b 4/15*6/14
【在 W********g 的大作中提到】
: first one:
: area= 0.5*a*b*sin (jiajiao)
: second one:
: a 5/15*4/14
: b 4/15*6/14
K*g
7 楼
福建开餐馆的我都会
【在 a*****g 的大作中提到】
: 谢谢，回头发包子。
【在 a*****g 的大作中提到】
: 谢谢，回头发包子。
d*1
8 楼
Wrong answer. Should be
a 5/15*4/14
b 2*4/15*6/14
【在 W********g 的大作中提到】
: first one:
: area= 0.5*a*b*sin (jiajiao)
: second one:
: a 5/15*4/14
: b 4/15*6/14
a 5/15*4/14
b 2*4/15*6/14
【在 W********g 的大作中提到】
: first one:
: area= 0.5*a*b*sin (jiajiao)
: second one:
: a 5/15*4/14
: b 4/15*6/14
W*g
9 楼
如果题意没有先后之分，你是对的
【在 d********1 的大作中提到】
: Wrong answer. Should be
: a 5/15*4/14
: b 2*4/15*6/14
【在 d********1 的大作中提到】
: Wrong answer. Should be
: a 5/15*4/14
: b 2*4/15*6/14
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