|
1.图是数轴上 从左到右依次 r s t并且rs之间距离大于st之间距离(图是这么画的 实际我不知道)On the number line shown, is zero halfway between r and s?条件1:s is to the right of zero 条件2:the distance between t and r is the same as the distance between t and -s 2.A contractor combined X tons of a gravel mixture that contained 10 percent gravel G, by weight, with y tons of a mixture that contained 2 percent gravel G, by weight, to produce Z tons of a mixture that was 5 percent gravel G, by weight, what is the value of X? 条件1:y=10 条件2:z=6 3.Tanya prepared 4 different ltters to be sent to 4 different addresses. For each letter, she prepared an envelope with its correct address. If the 4 letters are to be put into the 4 envelopes at random, what is the probability that only 1 letter will be put into the envelope with its correct address? 4.what is the result when X is rounded to the nearest hundredth? 条件1:when X is rounded to the nearest thousandth the result is 0.455 条件2:the thousandth digit of x is 5 5.Whenever Martin has a restaurant bill with an amount between $10 and $99, he caculates the dollar amount of the tip as 2 times the tens digit of the amount of his bill. If the amount of Martin's most recent restaurant bill was between $10 and $99, was the tip calculated by Martin on this bill greater than 15 percent of the amount of the bill?这个题我好像没有记全 6.If x and y are positive integers such that x=8y+12, what is the greatest common divisor of x and y? 条件1:x=12u, where u is an integer 条件2: y=12z, where z is an integer 先写这么多 |