Please help will mark brainliest. Find AC

Line AC = 16

Step-by-step explanation: We have two angles and one side given. The side given is facing one of the angles so we apply the Sine Rule;

a/SinA = b/SinB

We can now substitute values as follows;

AC/Sin 77 = 14/Sin 58

We cross multiply and we have

AC = (14 x Sin 77)/Sin 58

AC = (14 x 0.9744)/0.8481

AC = 13.6416/0.8481

AC = 16.08

Approximately, Line AC = 16.

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