So, these are actually pretty simple once you learn the equality used to solve for "x" and when to implement this method. You can use this equality to solve for a segment "x" anytime that two secant lines cutting through a circle come from the same point outside the circle.
Secant: by geometric definition is just a straight line that cuts a curve into multiple pieces.
I did one of them for you hopefully you can use my work for "a" to help you solve for "b".
For a. I got x=7.
Answer:
Step-by-step explanation:
Answer:
50%(???)
Step-by-step explanation:
Honestly I dunno but I would go with 50% that's half bro
Answer: The cost for 20 people equals $180.
Step-by-step explanation:
Given: It costs $100 to rent the bowling alley, plus $4 per person.
The cost for any number (n) of people can be found using the expression

We can find the cost for 20 people by substituting n=20 in the above expression, we get

Hence, The cost for 20 people equals $180.