The two pentagons shown are similar. 8 cm
87°
87°
9 cm
8 cm
16 cm
3 cm
6 cm
*not drawn to scale
What is the value of x?
A 6 cm
B. 9 cm
C 12 cm
D. 14 cm

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

the answers are in the images, i received 100% on this assignment. hope this !

greater than one

step-by-step explanation: