Answer:
i can't see the question for 8
and for 9 what object are they asking you to find the length and width of?
Step-by-step explanation:
Answer:
Total number of people = 13
A:
Number of ways to choose 10 players to take the field = 13C10
= 
= 286
B:
This is given as: 13P10
=
= 
= 1037836800
C:
This is given as:
(3C1 x 10C9) + (3C2 x 10C8) + (3C3 x 10C7)
Solving this we get the answer as = 285
Answer:

Step-by-step explanation:
1. Multiply both sides by 3.

2. Simplify 3 × 7 to 21.

therefor, the answer is x < -21