Hello,
f(x)=6(x+2)-3=6x+12-3=6x-9
y=6x-9==>x=6y-9==>6y=x+9==>y=(x+9)/6
if x=21 then y=(21+9)/6=30/6=5
f^(-1)(21)=5
Tell me the elaboration next time in this problem because I don't get the expanding or if a is dividing multiplying or if we are doing contracting or adding so I need to see if we're on down to be doing something in my ability or if we're doing something in my not opinion ability
Answer:
(-8,1)
Step-by-step explanation:
Answer:
Number of combinations = 56
Step-by-step explanation:
Points to remember
nCₐ = n!/(r!(n - r)!)
The given word is "FRIENDLY"
F R I E N D L Y is a 8 letter word.
<u>To find the number of combinations</u>
5 letters can be selected from 8 letter = 8C₅
8C₅ = 8!/(8 - 5)!5!
= 8!/3!5!
= (8 * 7 * 6* 5!)/(1 * 2 * 3 * 5!)
= 8 * 7
= 56
5 letter combinations can be created from the letters in the world “friendly = 56
