I believe it would be negative 9 because your subtracting by twelve again. I hope that helped
Answer:
(a)


(b)


(c)


Step-by-step explanation:
(a) This is a sequence of consecutive number



(b) This is a sequence of 2 to the power of n - 1. The next number is twice time of this number



(c) This is factorial sequence. Where the next number is this number multiplied by 



Answer: 10
Step-by-step explanation:
it says round to nearest 10 your answer was 9.8 so round to 10.
hope this helps :)
42.5 units sq
I’m not sure because I did this partly in my head but this should be right.
Answer:
Length of JK is 68.27 units.
Step-by-step explanation:
By applying geometric mean theorem (leg theorem) in the triangle attached,

(KL)² = (KM)(JK)
(32)² = (15)(x)
x = 
x = 68.2666
x ≈ 68.27
Therefore, length of JK is 68.27 units.