10^2+8^2-7^2/(2*10*8)
= 115/160 = 0.71875 round off to 0.72
Answer: 1) 5040 and 2) 165
Step-by-step explanation:
1) Here total number of letters = 10
The number of permutations that can be formed using 4 letters at a time
= P (10, 4)
= 
= 
= 
= 
= 10 × 9 × 8 × 7
= 5040
2) Here the total number of machine = 11
The different combinations of machines can Geoff choose from to use
= 
= 
= 
= 
= 11 × 5 × 3
= 165
False only metals are good conductors
Answer:
173 + h
Step-by-step explanation:
173 + h
The solutions are: (-10,0), (-1,5), and (2,8). Please, see the attached graph.