Answer this asap for me and i will thank u if its correct

B

Step-by-step explanation:

The 115° angle is adjacent to both unknown angles in the triangles, thus

unknown angles = 180° - 115° = 65°

The sum of the 3 angles in a triangle = 180°, thus

∠ 1 = 180° - (65 + 80)° = 180° - 145° = 35°

∠ 2 = 180° - (65 + 85)° = 180° - 150° = 30°

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