Answer:
Each one of the ten people has to shake hands with all the $20$ other people they don’t know. So $10\cdot20 = 200$. From there, we calculate how many handshakes occurred between the people who don’t know each other. This is simply counting how many ways to choose two people to shake hands from $10$, or $\binom{10}{2} = 45$. Thus the answer is $200 + 45 = \boxed{\textbf{(B)}\ 245}$.
Step-by-step explanation:
Hello, there!
He could use answer D. 8 feet by 3 feet.
The formula for area of a rectangle is L * W = A
The length is 8 and and the width is height
8 * 3 = A
8 * 3 = 24
Therefore, the answer is D.
I hope helped!
Let me know if you need anything else!
~ Zoe
XD LOL can i have brainliest
Answer:
y=-3x+8
Step-by-step explanation:
Answer: The first table
Step-by-step explanation:
1:16
2:32
4:64
8:128
