Answer:
Step-by-step explanation:
If triangles are similar, then corresponding sides are in proportion.
[tex]\dfrac{x}{4}=\dfrac{20}{10}[/tex] cross multiply
[tex]10x=(4)(20)[/tex]
[tex]10x=80[/tex] divide both sides by 10
[tex]x=8[/tex]
Answer: x = 8
Step-by-step explanation: because if the 10 goes to 20 and the shapes are the same its being multiplies by 2, so you also multiply 4 by 2 and get 8 so x= 8 hope that helps
