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2014年2月9日SAT官方每日一题---数学选择

  下面是2014年2月9日的SAT官方每日一题的内容,是关于数学方面的,题型是选择。SAT官方每日一题是collegeboard每天都会发布的题目,关于SAT考试的三个部分的各个题型。大家和无忧小编一起来看一下这个SAT官方每日一题吧。

  SAT官方每日一题之数学---选择:

  Mathematics > Standard Multiple Choice

  Read the following SAT test question and then click on a button to select your answer.

  IfN times (5 over 14) equals (5 over 14) times (7 over 9), thenN equals

  (A)7 over 9

  (B)9 over 7

  (C)5

  (D)7

  (E)14

  The correct answer is A

  Explanation

  IfN times (5 over 14) equals (5 over 14) times (7 over 9), then by the commutative property of multiplication,N times (5 over 14) equals (7 over 9) times (5 over 14). Multiplying each side of the latter equation by14 over 5givesN times 1 equals (7 over 9) times 1, soN equals 7 over 9.

  下面为大家提供一些和这些SAT官方每日一题相似的题目,供大家练习:

  Theccars in a car service use a total ofggallons of gasoline per week. If each of the cars uses the same amount of gasoline, then, at this rate, which of the following represents the number of gallons used by5of the cars in2weeks?

  (A)ten times c times g

  (B)(2 times g) over (5 times c)

  (C)(5 times g) over (2 times c)

  (D)g over (10 times c)

  (E)(10 times g) over c

  The correct answer is E

  Explanation

  The car service uses a total ofggallons of gasoline per week, and each of the cars uses the same amount of gasoline, so each of theccars usesg over cgallons of gasoline per week. Therefore,5of the cars use a total of(5 times g) over cgallons per week. It follows that5of the cars use(2) times ((5 times g) over c) equals (10 times g) over cgallons of gasoline in2weeks.

  以上就是关于2014年2月9日SAT官方每日一题中数学部分的详细内容,包括了题目和选项以及答案,后面附有一道相关的练习题。大家可以在备考SAT的过程中关注SAT每日一题的内容,这样就可以更好有不间断的练习,也就能在日积月累的过程中得到提高。