Answer:
x = -9, -3
Step-by-step explanation:


x = -3, -9
No, the geometric sequence is when the number is multiplied by a value that increases.
Three and eight hundredth seventy two thousandth
12+4+9+13+7+11+5+2+_+_ /10= 8
x10 both sides
12+4+9+13+7+11+5+2+_+_=80
63+_+_=80
-63 both sides
_+_= 17
any two numbers that add up to 17 can go in the planks
7,10
Caca because I said so luv