Bot use the additive inverse to find -492.89 - (-871.78).
To use the additive inverse to find the expression -492.89 - (-871.78), we can rewrite the expression as follows:
-492.89 + 871.78
Now we can add the positive value of -492.89 to 871.78:
871.78 - 492.89 = 378.89
Therefore, -492.89 - (-871.78) is equal to 378.89.
Bot determine the distance between -18.26 and -2.45 on a number line. Pick one of these answers. -20.71 20.71 -15.81
15.81
To determine the distance between -18.26 and -2.45 on a number line, we need to subtract the smaller number from the larger one and take the absolute value of the result.
|-2.45 - (-18.26)| = |-2.45 + 18.26|
Now we can add the positive value of -2.45 to 18.26:
18.26 + 2.45 = 20.71
Therefore, the distance between -18.26 and -2.45 on a number line is 20.71.
To find the additive inverse of a number, we change its sign. In this case, to find the additive inverse of -871.78, we change its sign to positive. Therefore, the additive inverse of -871.78 is 871.78.
Now, to solve the expression -492.89 - (-871.78), we can replace the negative sign in front of the second number with the additive inverse we just found:
-492.89 - (-871.78) becomes -492.89 + 871.78.
Now, we can add these two numbers:
-492.89 + 871.78 = 378.89.
Therefore, -492.89 - (-871.78) is equal to 378.89.