The additive inverse: The usage of addition with a negative number.
The original equation is 21 - 11 = 10
To use the additive inverse, change it so that there is an addition sign.
21 + (-11) = 10
B) -11 is your answer
hope this helps
Answer: the observer should consider to eliminate or to retake the third measure.
Explanation:
The four measures taken are 124.53, 124.55, 142.51 and 124.52.
As it can be easily seen, the third measure is much different from the other three. This means that something went wrong during the observation: it can be either the measure taken wrong or that the number was written wrong (if you switch the 2 and the 4 you get a number similar to the other ones).
If the third measure is not considered, an estimate of the mean would place it around 124.5, while if the outlier (the detatched number) is considered an estimate of the mean would increase to about 129.
Therefore, in order to obtain a more reliable mean, the observer should consider to eliminate or to retake the third measure.
Answer:-3
Just simplify the equation and you will x=-3
Answer:
x=56
Step-by-step explanation:
As ∠FAC and ∠EAD are vertical angles, the measure of their angles must be the same. This means that ∠
Now, we can use the fact that the line EAC would have a measure of 180 degrees.
Due to this, we can add up all of the angle on one side of that line to find x.

I just need some points so I can ask a question but I hope you find your answer!