Write numerals for each of the italicized number word names found in these examples. earth’s moon is (a) two million, one hundred fifty-five thousand, one hundred twenty miles across. the closest distance between earth and the moon is (b) two hundred twenty-five million, sixty thousand miles. the farthest distance between them is (c) two hundred fifty-one million, seven hundred twenty thousand miles.

(a)

2,155,120

(b)

225,060,000

(c)

251,720,000

Step-by-step explanation:

We have to write numerals for each of the italicized number word names found in these examples.

(a)

two million, one hundred fifty-five thousand, one hundred twenty =

2,155,120

( since 1 million could be represented as:

so 2 million could be written as:

similarly one hundred fifty-five thousand is written aS:

and one hundred twenty is written as 120.

Hence, the number  two million, one hundred fifty-five thousand, one hundred twenty  is written aS:

2,155,120 )

similarly we could proceed for (b) and (C) option.

(b)

two hundred twenty-five million, sixty thousand =

225,060,000

(c)

two hundred fifty-one million, seven hundred twenty thousand =

251,720,000

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 hope this is what you were looking for.

see attached graph