2017-08-06 174阅读
下面是为大家准备的4道SAT考试数学选择题练习题。同学们在备考SAT数学的过程中,一定要加强习题的练习,熟练到能充分理解题意,争取得到满分。
1.,,, andare points on a line, withthe midpoint of segment. The lengths of segments,, andare,, and, respectively. What is the length of segment?
(A)
(B)
(C)
(D)
(E)
2.In the xy-plane, line passes through the pointsand. Lineis perpendicular to line. What is the slope of line?
(A)
(B)
(C)
(D)
(E)
3.A geologist hasrocks of equal weight. Ifrocks and a-ounce weight balance on a scale withrocks and a-ounce weight, what is the weight, in ounces, of one of these rocks?
(A)
(B)
(C)
(D)
(E)
,,,,, ...
4.The first term of the sequence above is. Which of the following could be the formula for finding theterm of this sequence for any positive integer?
(A)
(B)
(C)
(D)
(E)
参考答案及解析:
1.The correct answer is B
Explanation
The key to this question lies in not jumping to incorrect conclusions. The question names the points on a line. It gives you a variety of information about the points. The one thing it does not do is tell you the order in which the points fall.
Many students assume that the order of the points is, then, then, then.As you will see, if you try to locate the points in this order, you will be unable to answer the question.
What Is the Question Asking?
The question asks for the length of line segment. In order to find this length, you have to establish the relative positions of the four points on the line.
What Do You Know?
Try to draw the figure. You might be tempted to locate pointfirst. Unfortunately, you don&apost have enough information about, yet, to place it.
You can place,, andbecauseis the midpoint of.
You know the lengths of three of the line segments:
Because you know whereis, you can label the length of.
Build the Figure, Adding What You Know and What You Can Figure Out
Becauseis the midpoint of, you know thatandare eachunits long.
Where can you place point?
It has to beunits from, because.
It also has to be
units from, because.
So the only location foris betweenand, but closer to.
Place pointand mark the distances.
It is now an easy matter to figure out the answer to the question:
isunits.
isunits closer tothan, soisunits.
4.The correct answer is B
Explanation
You do not know the value of theterm or theterm of the sequence, but you do know the values of the,, andterms. The correct formula must giveas the value of theterm,as the value of theterm, andas the value of theterm. Choice E,, gives, not, as the value of theterm. Choice A,, gives, not, as the value of theterm. Choice C,, gives, not, as the value of theterm. Choice D,, gives, not, as the value of theterm. This leaves choice B,, which gives the correct values for the,, andterms of the sequence.
以上就是关于4道SAT考试数学选择题练习题及其答案和解析,非常详细。同学们在备考阶段,一定要加强习题的练习以及题意的理解,争取SAT数学满分。
4道SAT数学选择题练习(2013年6月9日—6月12日)参考答案及解析下面是为大家准备的4道SAT考试数学选择题练习题。同学们在备考SAT数学的过程中,一定要加强习题的练习,熟练到能充分理解题意,争取得到满分。
1.,,, andare points on a line, withthe midpoint of segment. The lengths of segments,, andare,, and, respectively. What is the length of segment?
(A)
(B)
(C)
(D)
(E)
2.In the xy-plane, line passes through the pointsand. Lineis perpendicular to line. What is the slope of line?
(A)
(B)
(C)
(D)
(E)
3.A geologist hasrocks of equal weight. Ifrocks and a-ounce weight balance on a scale withrocks and a-ounce weight, what is the weight, in ounces, of one of these rocks?
(A)
(B)
(C)
(D)
(E)
,,,,, ...
4.The first term of the sequence above is. Which of the following could be the formula for finding theterm of this sequence for any positive integer?
(A)
(B)
(C)
(D)
(E)
上12下
共2页
阅读全文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
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。
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。