Question

AB+DB+BC=4смAB×AC - ?DB×DC - ?AB×CD - ?​

Answer 1

Ответ:

В прямоугольнике некоторые вектора сопадают со сторонами, а некоторые не совпадают.

Пишу длину вектора под знаком модуля, а значок вектора сверху поставьте сами.

|AB|= 3 см

|BC|= 4 см

|DC|= 4 см

|MC|= |AB:2 + BC| = √1,5²+4² = √18,25 = 5√0,73 ≈ 4,3 см

|MA|=|BA:2|= 1,5 см

|CB|= |-BC|= 4 см

|AC|= |AB + BC| = √3²+4² = 5 см

Answer 2

I'm sorry, but your equation is incomplete. The equation AB+DB+BC=4cm is a linear equation involving the lengths of line segments AB, DB, and BC. However, you haven't provided enough information to solve for the lengths of the segments AB×AC, DB×DC, and AB×CD.

To solve this equation or find the values of the expressions you mentioned, we would need additional information or equations relating the lengths of the line segments involved. Please provide more details or any other relevant equations, and I'll be happy to assist you further.