Give (a) the opposite and (b) the absolute value.

28

(a)what is the opposite? -28

(b) what is the absolute value? 20

a) is right

the absolute value of 28 is 28, you probably typed 20 as a typo

To determine the opposite of a number, you simply change its sign.

For example, if the number is positive, you make it negative, and if it is negative, you make it positive.

In this case, the opposite of 28 would be -28.

To find the absolute value of a number, you remove the negative sign if the number is negative, or leave it as is if the number is positive.

The absolute value is always a positive or zero value.

So, for the number 28, the absolute value would still be 28.