How many subsets does a set have, if the number of its elements is

2n

Step-by-step explanation:

if it is n then it would be 2n im guessing if it is 2n its n

Discovered a rule for determining the total number of subsets for a given set: A set with n elements has 2 n subsets. Found a connection between the numbers of subsets of each size with the numbers in Pascal's triangle. Discovered a quick way to calculate these numbers using Combinations.

Step-by-step explanation:

throw the computer

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!