Answer:
(A)

(B)

Step-by-step explanation:
(A)
we are given


Firstly, we will find few terms









so, we will get terms as
5, 7 , 9 , 11
we can see that this is arithematic sequence
First term =5
common difference =d=7-5=2
now, we can use nth term formula

now, we can plug values



(B)
we can plug n=10


Answer:
9.5 < x < 15
Step-by-step explanation:
10, i believe. i hope this helps :)
Answer:
h = 6 cm
Step-by-step explanation:
Atriangle = b×h/2
18cm² = 6cm×h/2
36cm² = 6cm×h
h = 36cm²/6cm
h = 6 cm