×

yielly_00

math

附加文件

解答 0

  • yielly_00
    2019-05-13 20:13:08

    附加文件

  • eric
    2019-05-13 20:20:23
    a.Let A=(a,0), B=(0,b)
    4/(a+2) × 4/2 = -1
    a=-10
    You can find b in the similar fashion
  • eric
    2019-05-13 20:21:05
    b is easy once a is done
  • eric
    2019-05-13 20:40:56
    28a.Use slope of AB × slope of BC = -1
  • eric
    2019-05-13 20:43:38
    28b.Find AB and BC first.
    Then use tan to find the angle
  • eric
    2019-05-13 20:46:06
    29a.(1,-7)
  • yielly_00
    2019-05-13 20:46:29
    how to do?
    •  eric 2019-05-13 20:43:38
    • 28b.Find AB and BC first. Then use tan to find the angle
  • yielly_00
    2019-05-13 20:46:47
    how to do?
    •  eric 2019-05-13 20:46:06
    • 29a.(1,-7)
  • eric
    2019-05-13 20:48:39
    29b. Check whether the product of slopes of PQ and QR is -1
  • eric
    2019-05-13 20:50:02
    Find AB and BC using distance formula
    •  yielly_00 2019-05-13 20:46:29
    • how to do?
  • eric
    2019-05-13 20:53:47
    x and y coordinates must exchange position after a rotation by 90°.
    •  yielly_00 2019-05-13 20:46:47
    • how to do?
  • eric
    2019-05-13 20:59:20
    So the original point Q(-7,-1) becomes R(±1,±7) with the signs of the coordinates of R determined by the position of R after the rotation
    •  eric 2019-05-13 20:53:47
    • x and y coordinates must exchange position after a rotation by 90°.
  • yielly_00
    2019-05-13 21:00:53
    i still dont know how to do, can you send the photos to me in 18,29?please
    •  eric 2019-05-13 20:43:38
    • 28b.Find AB and BC first. Then use tan to find the angle
  • eric
    2019-05-13 21:02:31
    What photos?
    •  yielly_00 2019-05-13 21:00:53
    • i still dont know how to do, can you send the photos to me in 18,29?please
  • yielly_00
    2019-05-13 21:04:45
    to do 28,29 photos
    •  eric 2019-05-13 21:02:31
    • What photos?
  • eric
    2019-05-13 21:06:24
    I won't send photos to show my works in most cases
    •  yielly_00 2019-05-13 21:04:45
    • to do 28,29 photos
  • yielly_00
    2019-05-13 21:11:34
    but can you clearly to show how to do 28,29,30?
    •  eric 2019-05-13 21:06:24
    • I won't send photos to show my works in most cases
  • eric
    2019-05-13 21:15:31
    I won't give you complete solution because learning is done through thinking and not through copying.
    •  yielly_00 2019-05-13 21:11:34
    • but can you clearly to show how to do 28,29,30?
  • eric
    2019-05-13 21:16:27
    Try to works on the clues I have given to you
  • yielly_00
    2019-05-13 21:22:31
    ??
    •  eric 2019-05-13 20:40:56
    • 28a.Use slope of AB × slope of BC = -1
  • eric
    2019-05-13 21:25:18
    If you have a question, try to express in complete sentences. This is a basic manner of a student.
    •  yielly_00 2019-05-13 21:22:31
    • ??
請填寫內容
請輸入你的答案
上載文件更改 ×
檔案過大
不支援此檔案
jpg, gif, png, doc, docx, pdf, xls, mov, mp4, m4a, mp3 (檔案上限為50M)