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SAT数学例题解析:求X

  下面无忧小编为大家整理了SAT数学例题解析:求X,大家可以在备考自己的SAT数学考试的时候多练习一些SAT数学题,然后根据自己的实际情况,进行适当的准备和借鉴。

  Ifabsolute value ((4 times x) minus 7) = 5

 

  absolute value (3 minus (8 times x)) = 1

 

  What value ofx

 

  satisfies both of the equations above?

  The correct answer is 1/2 or .5

  Explanation

  Difficulty: Medium

  

SAT数学例题解析:求X

 

  

SAT数学例题解析:求X

 

  Sinceabsolute value ((4 times x) minus 7) = 5, the value of(4 times x) minus 7is either5ornegative 5.

  (4 times x) minus 7 = 5

 

  4 times x = 12

 

  x = 3

 

  OR

  (4 times x) minus 7 = negative 5

 

  4 times x = 2

 

  x = 1 over 2

 

  The two values ofxthat satisfy the first equation are3and1 over 2.

  Sinceabsolute value (3 minus (8 times x)) = 1, the value of3 minus (8 times x)is either1ornegative 1.

  3 minus (8 times x) = 1

 

  8 times x = 2

 

  x = 1 over 4

 

  OR

  3 minus (8 times x) = negative 1

 

  8 times x = 4

 

  x = 1 over 2

 

  The two values ofxthat satisfy the second equation are1 over 4and1 over 2.

  You are asked to find the value ofxthat satisfies both equations. That value is1 over 2. The answer can be entered in the grid as1 slash 2or.5

 

  以上就是SAT数学例题解析介绍,大家在备考SAT数学考试的时候,可以根据自己的实际情况,对SAT数学题进行不同程度的准备,以便丰富自己的SAT数学技巧,对考试有更加全面的应对。