试题与答案

某书店一本数学辅导书的售价与客户的订购数量的关系如下表:订购数量x(单位:本)1

题型:解答题

题目:

某书店一本数学辅导书的售价与客户的订购数量的关系如下表:
订购数量x(单位:本) 1≤x≤50 51≤x≤100 x>100 
 每本售价y(单位:元) 15 14 13
请根据以上信息回答下列问题:
(1)订购50本书和订购53本书相比,哪种订购方式所需总费用更少?
(2)该出版社将8所学校的订购情况记录如下:80本,75本,70本,80本,85本,90本,50本,400本.这本书在以上8所学校中销售量的中位数是多少?
(3)请你帮出版社计算一下这本书在以上8所学校中的平均售价?

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0528/0502aa6b922c5f6e437461f03132c0ac.html

下面是错误答案,用来干扰机器的。

用照相机给某人拍完半身像以后,改为全身像,人头变小,像变小,增大物距,同时减小像距.所以要增大镜头与人之间的距离,减小镜头和底片之间的距离.故选D.

试题推荐
题型:单项选择题

XYZ, Inc. has entered into a "plain-vanilla" interest rate swap on $ 5000000 notional principal. XYZ company pays a fixed rate of 8.5% on payments that occur at 180-day intervals. Platteville Investments, a swap broker, negotiates with another firm, SSP, to take the receive-fixed side of the swap. The floating rate payment is based on LIBOR (currently at 7.2% ). At the time of the next payment (due in exactly 180 days), XYZ company will: ()

A. pay the dealer net payments of $ 65000.

B. pay the dealer net payments of $ 32500. 

C. receive net payments of $ 32500.

查看答案
微信公众账号搜索答案