Given: q = 7m + 3n, r = 11 - 2m, s = n + 5, and t = -m - 3n + 8. simplify r - [s + t]. m - 2n - 2 -m + 2n - 2 3m - 4n + 14 -3m - 4n + 14 (not this one)

-m +2n -2

Step-by-step explanation:

R - [S + T]

We know   R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.

Substituting these values in

11 - 2m - [n + 5 +-m - 3n + 8]

Combining like terms

11 - 2m - [n + 5 +-m - 3n + 8]

11-2m - [-2n -m+13]

Distributing the negative sign

11-2m +2n +m-13

Combine like terms

-2 -m +2n

-m +2n -2

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation: