Answer:
20
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Start by writing the ratios equal to each other since they are equivalent.

Notice if you divide 21/3 = 7. Since they are equa then x/3=10. What number divided by 3 equals 10? x=30
25
Square root of 25 is 5
i don't have a answer but hope you are safe and are well
Step-by-step explanation:
Ans:60degree (A)
as they are opposite to each other