Respuesta :

Answer:

[tex]387,169.1[/tex]

Step-by-step explanation:

we know that

To Round a number

a) Decide which is the last digit to keep  

b) Leave it the same if the next digit is less than [tex]5[/tex] (this is called rounding down)  

c) But increase it by  [tex]1[/tex] if the next digit is  [tex]5[/tex] or more (this is called rounding up)

In this problem we have

[tex]387,169.138383[/tex]

We want to keep the digit [tex]1[/tex]

The next digit is [tex]3[/tex] which is less than [tex]5[/tex], so no change is needed to [tex]1[/tex]

therefore

the answer is  

[tex]387,169.1[/tex]

For this case we must round the following expression:

[tex]387169.138383[/tex]

From right to left we have:

[tex]3 <5[/tex] then we have:

[tex]387169.13838[/tex]

[tex]8> 5[/tex] then we have:

[tex]387169.1384[/tex]

[tex]4 <5[/tex] then we have:

[tex]387169.138[/tex]

[tex]8> 5[/tex]then we have:

[tex]387169.14[/tex]

[tex]4 <5[/tex]then we have:

[tex]387169.1[/tex]

Answer:

[tex]387169.1[/tex]