-2(-53)×36-24-36 》3816-60=3756
Answer:
The conclusion is invalid.
The required diagram is shown below:
Step-by-step explanation:
Consider the provided statement.
Great tennis players use Hexrackets. Therefore, if you use a Hexracket, you are a great tennis player.
From the above statement we can concluded that Great tennis players use Hexrackets. But it may be possible that some people who use a haxracket are not great tennis player.
Therefore, the conclusion is invalid.
The required diagram is shown below:
Answer: 8
<u>Step-by-step explanation:</u>
The formula for the sum of the angles of a polynomial is:

1080 = 180(n - 2)
1080 = 180n - 360
1440 = 180n
8 = n