The height of a javelin in feet is modeled by h(t) = -16t2 + 79 +5, where t is time in seconds after the javelin is thrown. How long is it in the air? What is the maximum height? When does

the javelin reach a height of 99 feet?

1760 kilometers

step-by-step explanation:

multiply the amount of time the plane took to travel by it's speed

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:

34

step-by-step explanation: