Answer:
Your question is no completed
X= -2
Y= -1
Z= 1
You may use solve this problem by substituting the values as well. If everything goes wrong , go for Cramer’s rule
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Answer:</u></h3>
The formula determine the distance from C to D is:

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Step-by-step explanation:</u></h3>
The formula that can be used to determine the distance from point C to point D is:

We know that distance between two points A(a,b) and B(c,d) is equal to the length of the line segment AB and is calculated by the help of the formula:

So, here we have:
(a,b)=(a,b) and (c,d)=(0,b)
Answer:
13
Step-by-step explanation:
8 - (-5) = 13
Since x is the same in both points we only have to count the y
Answer:

Step-by-step explanation:
Step 1: Simplify square roots
√72 = 6√2
√50 = 5√2
So, 
Step 2: Cancel like terms

Step 3: Rewrite
And we should get our answer!