2017-08-06 298阅读
下面为大家推荐的是三道SAT数学练习题的内容,后面附有详细的答案解析。SAT数学题对于中国考生来说难度不大,但是想要拿到高分也不是一件那么容易的事,需要经过大家不断的练习才行。
有问题?找免费的澳际专家咨询!
Read the following SAT test question and then click on a button to select your answer.
1.If a number is chosen at random from the set, what is the probability that it is a member of the solution set of both and ?
Answer Choices
(A)
(B)
(C)
(D)
(E)
2.The projected sales volume of a video game cartridge is given by the function where 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)
3.If the graph of the function in the -plane contains the points , , and , which of the following CANNOT be true?
Answer Choices
(A) The graph of has a maximum value.
(B) for all points on the graph of .
(C) The graph of is symmetric with respect to a line.
(D) The graph of is a line.
(E) The graph of is a parabola.
Explanation
1.The correct answer is C
Ifand , then . The numbers from the listed set that satisfy these inequalities are and . There are five elements in the listed set, so the probability of a number chosen at random from the set being a member of the solution set of both inequalities is .
2.The correct answer is C
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.
3.The correct answer is D
If the graph of the function , which contains the points , , and , were a line, then the slope of the segment connecting the points and would be the same as the slope of the segment connecting the points and . However, the slope of the segment connecting the points and is , and the slope of the segment connecting the points and is . Therore, the graph of cannot be a line.
The statements in the other four options could be true. For example, if the equation of were , then the graph of would contain the points , , and . The graph of would be a parabola symmetric with respect to the line with equation . The maximum value of would occur at the point , and would be true for all points on the graph of .
以上就是这三道SAT数学练习题目的全部内容,非常详细。大家可以在备考自己的SAT数学考试的时候,对此加以适当的参考和借鉴。
更多SAT数学相关:
北京SAT数学培训
三道SAT数学练习题及答案
两道SAT数学练习题目及答案
2011年SAT数学成绩分析
Copyright 2000 - 2020 北京澳际教育咨询有限公司
www.aoji.cn All Rights Reserved | 京ICP证050284号
总部地址:北京市东城区 灯市口大街33号 国中商业大厦2-3层
高国强 向我咨询
行业年龄 11年
成功案例 2937人
留学关乎到一个家庭的期望以及一个学生的未来,作为一名留学规划导师,我一直坚信最基本且最重要的品质是认真负责的态度。基于对学生和家长认真负责的原则,结合丰富的申请经验,更有效地帮助学生清晰未来发展方向,顺利进入理想院校。
Tara 向我咨询
行业年龄 6年
成功案例 1602人
薛占秋 向我咨询
行业年龄 10年
成功案例 1869人
从业3年来成功协助数百同学拿到英、美、加、澳等各国学习签证,递签成功率90%以上,大大超过同业平均水平。
Cindy 向我咨询
行业年龄 18年
成功案例 4806人
精通各类升学,转学,墨尔本的公立私立初高中,小学,高中升大学的申请流程及入学要求。本科升学研究生,转如入其他学校等服务。