Answer:
4
Step-by-step explanation:
Since ABC is similar to ADE by AA (the triangles share angle A and a right angle), they must have equal proportions. Therefore:
[tex]\dfrac{x}{4}=\dfrac{12}{4+8}[/tex]
Therefore, x=4. Hope this helps!
x=4
The triangles are similar so we can use ratios to solve
x 4
------ = ----------
12 (4+8)
Using cross products
12x = 4*12
Divide each side by 12
12x/12 = 48/12
