Answer:
x = 3.6
Step-by-step explanation:
By the Postulate of intersecting chords inside a circle.
Using the equation P=a+b+c , you just need to plug in.
4a-2b + 7a-3 + 9a - 4
Combine like terms.
20a-2b-7
Answer:-18
Step-by-step explanation: i know evertyhing