下面为大家总结了两道
Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
1、In the figure above, inscribed triangle is equilateral. If the radius of the circle is, then the length of arc is
Answer Choices
(A)
(B)
(C)
(D)
(E)
The correct answer is A
Explanation
An equilateral triangle has three equal sides, so the lengths of the three arcs must be equal, and thus each arc is of the circumference of the circle. The circumference of the circle is , so the length of arc is of , or .
2、The projected sales volume of a video game cartridge is given by the functionwhere is the number of cartridges sold, in thousands; is the price per cartridge, in dollars; and is a constant. If according to the projections,cartridges are sold at per cartridge, how many cartridges will be sold at per cartridge?
Answer Choices
(A)
(B)
(C)
(D)
(E)
The correct answer is C
Explanation
For cartridges sold at per cartridge, (since is the number of cartridges sold, in thousands) and . Substituting into the equation yields.
Solving this equation for yields .
Since is a constant, the function can be written as . To determine how many cartridges will be sold at per cartridge, you need to evaluate . Since is given in thousands, there will be cartridges sold at per cartridge.
以上就是关于2011年10月16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。
以上就是这两道SAT数学题目的全部内容，包括了一道几何题和一道代数题，大家可以在备考的时候，根据自己的实际情况进行适当的练习。