PLEASE HELP! Graphite is made up of layers of graphene. Each layer of graphene is about 200 picometers, or 200 x 10^-12 meters thick. How many layers of graphene are there in a 1.6mm thick piece of graphite? Express your answer in scientific notation.

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

41/17 as a decimal rounded to the nearest hundredth

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !