SAT考试就是美国的高考,也是比较大型的考试。对于国际考生来说,SAT考试也是申请美国院校的重要成绩。那么对于SAT数学部分,具体的美国高考都考察什么内容?出题方式是什么呢?下面小编为大家整理了详细的内容,供大家参考!

  (a+3)(2a^2-5a+7)

  Which of the following is equivalent to the expression above?

  A.2a^3-5a+21

  B.2a^3+a^2-8a+21

  C.2a^3+6a^2-5a+7

  D.2a^3+11a^2+22a+21

  答案:B

  解析:

  Choice B is correct. When multiplying polynomials, be sure to multiply each term in the first polynomial by each term in the second polynomial.

  This can be done as follows: (a+3)(2a^2-5a+7)=2a^3-5a^2+7a+6a^2-15a+21

  Combine like terms to get:

  2a^3+a^2-8a+21

  The equivalent expression is 2a^3+a^2-8a+21.

  Lisa gives her little brother Sam a 15-second (sec) head start in a 300-meter(m) race. During the race, Sam runs at an average speed of 5 m/sec and Lisa runs at an average speed of 8 m/sec, not including the head start. Which of the following best approximates the number of seconds that had passed when Lisa caught up to Sam?

  A.5

  B.25

  C.40

  D.55

  答案:B

  解析:

  Choice B is correct.

  以上就是关于“美国高考SAT试题数学”的内容,希望通过上述内容的学习,大家能够更好的了解SAT数学考试的真题内容,做好相关的备考工作。


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