下面为大家介绍的是两道SAT数学题及其解法的相关内容。这两道SAT数学题都是关于代数方面的，有一些难度，需要大家在解答的过程中适当的注意一下。下面是详细内容，大家一起来看看吧。
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1、The stopping distance of a car is the number of feet that the car travels after the driver starts applying the brakes. The stopping distance of a certain car is directly proportional to the square of the speed of the car, in miles per hour, at the time the brakes are first applied. If the car’s stopping distance for an initial speed of 
miles per hour is 
feet, what is its stopping distance for an initial speed of 
miles per hour?
Answer Choices
(A) 
feet
(B) 
feet
(C) 
feet
(D) 
feet
(E) 
feet
2、If 
is divisible by 
, 
, and 
, which of the following is also divisible by these numbers?
Answer Choices
(A) 
(B) 
(C) 
(D) 
(E) 
Explanation：
1、The correct answer is D
The stopping distance is directly proportional to the square of the initial speed of the car. If 
represents the initial speed of the car, in miles per hour, and 
represents the stopping distance, you have that the stopping distance is a function of 
and that 
, where 
is a constant. Since the car’s stopping distance is 
feet for an initial speed of 
miles per hour, you know that 
. Therefore, 
, and the car's stopping distance for an initial speed of 
miles per hour is 
feet.
2、The correct answer is D
Since 
is divisible by 
, 
, and 
, 
must be a multiple of 
, as 
is the least common multiple of 
, 
, and 
. Some multiples of 
are 
, 
, 
, 
, and 
.
If you add two multiples of 
, the sum will also be a multiple of 
. For example, 
and 
are multiples of 
and their sum, 
, is also a multiple of 
.
If you add a multiple of 
to a number that is not a multiple of 
, the sum will not be a multiple of 
. For example, 
is a multiple of 
and 
is not. Their sum, 
, is not a multiple of 
.
The question asks which answer choice is divisible by 
, 
, and 
; that is, which answer choice is a multiple of 
. All the answer choices are in the form of "
plus a number." Only choice (D), 
, has 
added to a multiple of 
. The sum of 
and 
is also a multiple of 
, so the correct answer is choice (D).
以上就是这两道SAT数学题的全部内容，后面的题目解答方法非常详细。大家可以在备考SAT数学考试的时候，利用题目对自己 掌握的知识点进行适当的检查和测试，以找出不足之处进行更改。
更多SAT数学相关：
北京SAT数学培训
两道SAT数学练习题解析
两道SAT数学题分享
SAT数学练习题目两个
