The length of a cell phone is 1.6 inches and the width is 4.6 inches. The company making the cell phone wants to make a new version whose length will be 2.16 minches. Assuming the side lengths in the new phone are proportional to the old phone, what will be the width of the new phone?

5.16

Step-by-step explanation: hope this helps!

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:

probability for j is 1/4

while

a is 1/6