Mean the the total of all values, divided by the number of values
Let
x---------> my favorite number
we know that
(x+9)/15=3/5------> 5*(x+9)=15*3-----> divide by 5 both sides----> (x+9)=3*3
x+9=9------> x=0
therefore
the answer is
My favorite number is 0
X^2+5x+6=0
(x+3)(x+2)=0
x-3, x-2
Answer:
x = 2
Step-by-step explanation:
