natalie paid $5,300 for twenty watches important from the u. s. in addition, she paid an importantof 12%. calulate the total cos of the watches

$5936

Step-by-step explanation:

She paid $5300 plus 12% of $5300.

She paid 112% of $5300.

112% of $5300 =

= 1.12 * $5300

= $5936

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: