Reduce the following fraction: -36x^4y^4z^5/-12x^6y^3z

a. -3x^2yz^4
b. 3yz^4/1x^2
c. -9yz^5/-3x^2
d. 36yz^5/12x^2

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2