Answer:
![x=2.1](https://img.qammunity.org/2019/formulas/mathematics/middle-school/b3pbndnnrj25vfnaq4p866jv5ryj25tifo.png)
Explanation:
We have been given that triangle ABE is similar to triangle ACD. We rae asked to find the value of x.
We will use proportions to solve for x as similarity states that corresponding sides of two similar figures are proportional.
![(x)/(CD)=(AB)/(AC)](https://img.qammunity.org/2019/formulas/mathematics/high-school/rb1la91xv51gyhf8yii34svohldq7on7s7.png)
Upon substituting our given values in above proportion, we will get:
![(x)/(3.5)=(3)/(5)](https://img.qammunity.org/2019/formulas/mathematics/high-school/vnan7ba38ee209i1zdx4xwdn2p6nykf17b.png)
![(x)/(3.5)*3.5=(3)/(5)*3.5](https://img.qammunity.org/2019/formulas/mathematics/high-school/srul05qiovfkt6unbayuzmwdsuv2y6wue3.png)
![x=3*0.7](https://img.qammunity.org/2019/formulas/mathematics/high-school/yjzb0qqeddy24wgyrb3495ckenp1kfcxpm.png)
![x=2.1](https://img.qammunity.org/2019/formulas/mathematics/middle-school/b3pbndnnrj25vfnaq4p866jv5ryj25tifo.png)
Therefore, the value of x is 2.1.