第一道——customize a bike by exchanging the front wheel for a wheel that had one half the diameter of the back wheel,then when ride the bike,how many revolutions does the front wheel make for each revolution of the back wheel?C 2D 1/2第二道
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/27 10:06:26
第一道——customize a bike by exchanging the front wheel for a wheel that had one half the diameter of the back wheel,then when ride the bike,how many revolutions does the front wheel make for each revolution of the back wheel?C 2D 1/2第二道
第一道——customize a bike by exchanging the front wheel for a wheel that had one half the diameter of the back wheel,then when ride the bike,how many revolutions does the front wheel make for each revolution of the back wheel?
C 2
D 1/2
第二道——When 15 is divided by the positive integer k,the remainder is 3,.For how many different values of K is the true?我觉得是4个(1,2,3,4),但答案给的是3个,为什么,哪里错了?
第一道——customize a bike by exchanging the front wheel for a wheel that had one half the diameter of the back wheel,then when ride the bike,how many revolutions does the front wheel make for each revolution of the back wheel?C 2D 1/2第二道
第一道
C
直径是一半,所以周长是一半,所以要走相同的距离要有2倍的转速.
第二道
15被一个正整数除余3,所以这个数12的因数.所以可以是4,6,12.总共3个.
有没有SAT II数学8,物理,化学的资料?我没上过课,不太了解。要是有对于中国学生的基础来说没问题的 你所写的我都有考过。只要你高中的
那个第二题余数是3,所以12能整除这个k
并且这个k要大于3
那么k只能取4、6、12了
所以有3个
第一个是c么,一个直径是一个的一半,则一个周长就是一个的一半,那么一个转一圈,另一个就转两圈撒