What is the answer to: -8.6x10x(-19.09)=

1641.74 or 1641.74x^2

Step-by-step explanation:

if those x is an actual x then the answer is the second choice, if its for multiplication then its the first choice.

you have to multiply whats outside of the parenthesis first then multiply that number with -19.09

8.6x10x19.09 would equal to 86x19.09 which would equal to 1641.74

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:

i belive those are the ones that are under 90 degreese.