Answer:
4
Step-by-step explanation:
In similar triangles, corresponding angles will be in the same ratio
EA = DA - DE = 10 - 5 =5
[tex]\dfrac{EA}{DE}=\dfrac{BA}{CB}\\\\\\\dfrac{5}{5}=\dfrac{6}{x+3}\\\\1 =\dfrac{6}{x+3}[/tex]
Cross multiply,
x +3 = 6
Subtract 3 from both sides
x = 6 - 3
x = 3
x +1 = 3+ 1 = 4
