What is 6.4 rounded t the nearest whole number

A Whole number are exact numbers like 0,1,2,3

Whole number are a set of positive integers along with 0 and exclude fractions and decimals numbers.

The  general rule for rounding off is;  

* If the number you are rounding off is followed by 5,6,7,8, or 9 round the number up.

or

* If the number you are rounding off is followed by 0,1,2,3,4, round the number down.

To find 6.4 rounded to the nearest whole number.

By the rule of rounding off;

As 4 is the first figure to be discarded and this is less than 5

then, the previous figure (i.,e 6) there would be no change.

Therefore, the number 6.4 rounded to the nearest whole number is 6.

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)

it would have to be 3/0