Foundation reinforcement 1-7 questions ACBCCAA

Thinking inquiry 8 questions:

36=n(n- 1)/2 The solution is n=9 (negative values are discarded).

The second chapter answers

Foundation reinforcement 1- 10 ABACDCCACB

Thinking query 1 1:

There are questions to know.

8-8x-5x+ 10=8x+4

-2 1x=- 14

x=2/3

Chapter III Answers

Foundation reinforcement1-9 abadbAAC

Thinking inquiry 10 question:

Each male guest shakes hands with nine female guests, 10*9=90.

C 10 2=90 between male guests

***90+90= 180 species