精品偷拍一区二区三区,亚洲精品永久 码,亚洲综合日韩精品欧美国产,亚洲国产日韩a在线亚洲

  • <center id="usuqs"></center>
  • 
    
  • (1) The coordinates of the three points A,B C on the plane are (-5,-5),(-2,-1)and(-1,-2),resoective

    (1) The coordinates of the three points A,B C on the plane are (-5,-5),(-2,-1)and(-1,-2),resoective
    (1)The coordinates of the three points A,BC on the plane are (-5,-5),(-2,-1)and(-1,-2),resoectively,the triangle ABC is( )
    A,a right triangle ,B an isosceles triangle C,an equilateral triangle D,an obtuse triangle


    (2)Leta,b and c be rational numbers and b =12/5-13/5a, c=13/5-12/5a, then
    aXa -bXb+cXc=()
    英語(yǔ)人氣:683 ℃時(shí)間:2020-04-24 14:12:52
    優(yōu)質(zhì)解答
    第一個(gè)為等腰三角形,選B
    第二個(gè)為1
    我來回答
    類似推薦
    請(qǐng)使用1024x768 IE6.0或更高版本瀏覽器瀏覽本站點(diǎn),以保證最佳閱讀效果。本頁(yè)提供作業(yè)小助手,一起搜作業(yè)以及作業(yè)好幫手最新版!
    版權(quán)所有 CopyRight © 2012-2024 作業(yè)小助手 All Rights Reserved. 手機(jī)版