Find the measure of angle P.

  80°

Step-by-step explanation:

Inscribed angle QRP is half the measure of intercepted arc QP, so is ...

  ∠R = 90°/2 = 45°

The sum of angles in a triangle is 180°, so angle P is ...

  ∠P = 180° -55° -45°

  ∠P = 80°

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

i believe the correct answer is b.