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marusya05 [52]
3 years ago
6

2+3(2x-5)-3(4z+6)-8 show me how to solve this problem

Mathematics
2 answers:
lakkis [162]3 years ago
6 0

2+3(2x-5)-3(4z+6)-8

2+3(2x)+3(-5)-3(4z)-3(6)-8

2+6x-15-12z-18-8

2-15+6x-12z-18-8

-13+6x-12z-26

-13-26+6x-12z

-39+6x-12z

6x-12z-39

gizmo_the_mogwai [7]3 years ago
4 0
The answer is 2+3=5 (2*-5)=-10-3=7. (4z+6)=10z-8=2z=5+7+2z=14z
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Which systems of equations intersect at point A in this graph?
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Answer:

The point of intersection of the system of equations is:

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The correct system of equations intersect at point A in this graph will be:

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Thus, the second option is correct.

Step-by-step explanation:

Given the point

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Let us check the system of equations to determine whether it intersect at point A in this graph.

Given the system of equations

\begin{bmatrix}y=4x+9\\ y=-3x-5\end{bmatrix}

Arrange equation variable for elimination

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\underline{y-4x=9}

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so the system of equations becomes

\begin{bmatrix}y-4x=9\\ 7x=-14\end{bmatrix}

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From the attached graph, it is also clear that the system of equations intersects at point x = -2, and y = 1.

In other words, the point of intersection of the system of equations is:

(x, y) =  (-2, 1)

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\begin{bmatrix}y=4x+9\\ y=-3x-5\end{bmatrix}

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