10P4 = 10! / (10-4)! = 10*9*8*7 = 5040
9C4 = 9! / 5! 4! = 9*8*7*6 / 4*3*2*1 = 126
Just combine like terms: (f+g)(x)=x^2+6x+30
Answer:
x=3
Step-by-step explanation:
6x+6/32=9x-9/24
144x+144=288x-288
144x=288x-432
-144x=-432
Therefore, x=3
Answer:
see explanation
Step-by-step explanation:
These are the first 4 terms of a geometric sequence with n th term
= a₁ 
where a₁ is the first term and r the common ratio
r = 36 ÷ 24 = 54 ÷ 36 = 81 ÷ 54 = 1.5 and a₁ = 24, hence
= 24
← explicit formula