The measure of one interior angle of a regular polygon is 144 how many sides does the
polygon have?

Step-by-step explanation:

(n - 2)180/n = interior angle

(n - 2)180/n= 144

(n - 2)180 = 144n

180n - 360 = 144n

180n - 144n = 360

36n = 360

n = 360/36

n = 10

Number of side is 10

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

answer: the value of x is 7cm

step-by-step explanation: