6.The figure below shows an open view of a circle divided into 8 even quadrants.If the circle is laid flat on the ground and two darts are to be dropped on the circle,what is the probability that the sum of the numbers on which the darts are dropped
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6.The figure below shows an open view of a circle divided into 8 even quadrants.If the circle is laid flat on the ground and two darts are to be dropped on the circle,what is the probability that the sum of the numbers on which the darts are dropped
6.The figure below shows an open view of a circle divided into 8 even quadrants.If the circle is laid flat on the ground and two darts are to be dropped on the circle,what is the probability that the sum of the numbers on which the darts are dropped will be 10 or higher?
A) 1/12 B) 2/3 C) 2/9 D) 5/6 E) 4/9
我的的结果 题里还是没有
6.E 8.B 9.E
这几个也是相关的题 有兴趣的帮我看看吧
6.The figure below shows an open view of a circle divided into 8 even quadrants.If the circle is laid flat on the ground and two darts are to be dropped on the circle,what is the probability that the sum of the numbers on which the darts are dropped
第一题的图是什么样子,八等分,然后分数呢?
第二题是问半圆上两对称点的纵坐标是多少(横坐标相同的两点的纵坐标),不过好像不该加括号,加了括号就像是一个点了.其实是不同的两点的纵坐标.当然只能选B.
第三题是问“有多少个比50小的整数有且只有两个不同的素因子”,这道题以我想法是这样,就是50以下质因数的乘积,即2、3、5、7、11、13、17、19、23这几个数之间可能的乘积,这个乘积要小于50(29以上就比50大了),看它的可能性一共有多少.
2的可能性最多,是17个:2分别和其他8个质数相乘;2×3×5;2×2×3,2×2×5,2×2×7,2×2×11,2×2×3×3,2×2×2×3,2×2×2×5;2×2×2×2×3
3的可能性是5个,3×5,3×7,3×11,3×13;3×3×5
5的可能性只有1个,即5×7
于是,所有可能性加一起,一共是23种.这个方法还是比较笨.你发明了新方法告我哈.
请问有中文的吗
第二题是问半圆上两对称点的纵坐标是多少(横坐标相同的两点的纵坐标),选B。
第三题,就是50以下质因数的乘积,这个乘积要小于50,看它的可能性一共有多少。
2的可能性最多,是17个:2分别和其他8个质数相乘;2×3×5;2×2×3,2×2×5,2×2×7,2×2×11,2×2×3×3,2×2×2×3,2×2×2×5;2×2×2×2×3
3的可能性是5个,3×5,3×7,3×...
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第二题是问半圆上两对称点的纵坐标是多少(横坐标相同的两点的纵坐标),选B。
第三题,就是50以下质因数的乘积,这个乘积要小于50,看它的可能性一共有多少。
2的可能性最多,是17个:2分别和其他8个质数相乘;2×3×5;2×2×3,2×2×5,2×2×7,2×2×11,2×2×3×3,2×2×2×3,2×2×2×5;2×2×2×2×3
3的可能性是5个,3×5,3×7,3×11,3×13;3×3×5
5的可能性只有1个,即5×7
于是,所有可能性加一起,一共是23种。
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各位哥哥姐姐们,也帮我解答一道数学题吧http://zhidao.baidu.com/question/177980877.html?fr=middle_ask 对你们来说不会难的,这是小学的题,悬上分30