Iggy is practicing for a marathon by running laps on the track at school. Each lap covers 0.7 kilometers, and he has already run 19.6 kilometers. How many laps does he need to run if he wants to complete 91 kilometers? A. Write equation The variable term: Add or subtract: The constant term added to/subtracted from the variable term: The constant term by itself: The final equation: Variable: Where x is the number of lapso pe B. Solve Equation and work: Check:

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:

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7  

5: 20

step-by-step explanation: