Answer:
Option B) (-1,7,5) is correct.
The solution to the given system of equation is (-1,7,5)
Step-by-step explanation:
Given system of equations are
To find the solution of the given system of equations by using Elimination method:
Now adding equations (1) and (2)
_________________
________________
(since "-" getting cancelled)
Now adding equations (1) and (3)
_________________
________________
Now adding equations (4) and (5)
_________________
________________
Therefore y=7
Substituting y=7 in equation (4)
Therefore x=-1
Now substituting the values x=-1 and y=7 in equation (1) we get
Therefore z=5
Therefore the solution to the given system of equation is (-1,7,5)
Therefore Option B) (-1,7,5) is correct.
The total cost of 400 square feet of land if it sells for $110 per square foot is $ 44,000.
<h3>what is Area?</h3>
Area is the quantity that expresses the extent of a region on the plane or on a curved surface.
Here, Total area = 400 sq. units
Cost per square foot = $ 110
Total Cost = Total area X Cost per unit area
TC = 400 X 110
TC = 44,000
Thus, the total cost of 400 square feet of land if it sells for $110 per square foot is $ 44,000.
Learn more about Area from:
brainly.com/question/27683633
#SPJ1
Answer:
B and D are the answers
Step-by-step explanation:
Step-by-step explanation:
To determine distances, we need to use this formula: 
To apply that formula we need to use the coordinates of point, but in this case will be calculated generally, due to the lack of specific values.
So, Point A have the coordinates 
Let's call Point P the one that's on the x-axis, its coordinates are 
Applying the formula, the distance between this two points will be:
To find an opposite and equidistant point, we only need to use opposite values. So, let's call Point B, the opposite point, its coordinates will be:
And the distance will be the same, because squared values will always results positive.
