Use the triangle angle theorem:
All interior angles of a triangle equal 180 degrees.
If you use the theorem you should get the first one 19,70,91
Answer:
option C
Step-by-step explanation:
Total number of items = 5
Number of items to choose = 2
Therefore, the number of combinations is

Answer:
"23,520"
Step-by-step explanation:
one trip: 14 passengers
one day: 3 trips
passengers: 80
80x14= 1,120
1,120x3= 3,360
3,360x7= 23,520
Answer:
21 chickens
Step-by-step explanation:
10×4=40
82-40=42
42÷2=21