At a business meeting, everyone shook hands with everyone else exactly once. If there were a total of 10 handshakes, how many people were at the meeting.

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

What is the area of the trapezoid shown ?

Pls brainliest will be awarded if answer is correct