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Taya2010 [7]
3 years ago
9

What is the solution of the following system?

Mathematics
1 answer:
Yakvenalex [24]2 years ago
3 0
<h3>Answer:  B) no solutions</h3>

===========================================================

Explanation:

Let's isolate the variable y in the first equation

-2x - y = 1

-2x = 1 + y

1+y = -2x

y = -2x-1

Then we'll plug this into the second equation

-4x - 2y = -1

-4x - 2(-2x-1) = -1

-4x + 4x + 2 = -1

0x + 2 = -1

0 + 2 = -1

2 = -1

We run into a contradiction. No matter what x value we pick, the last equation will never be true. This leads to a domino effect to cause the first set of original equations to never be true when considered as a system.

Therefore, this system is inconsistent. There are no solutions. These two lines graph out parallel lines that never intersect.

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ch4aika [34]

The true statement about right-angle triangle ABC is that: A. sin(A) = cos(C) and cos(A) = sin(C).

<h3>How to apply basic trigonometry?</h3>

In order to determine the angles, we would apply basic trigonometry. From the diagram of the right-angled triangle shown below, we can deduce the following parameters:

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  • Opposite (Opp) side = a.
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By applying the basic trigonometry functions, we have:

sin(A) = Opp/Hyp = a/c.

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Read more on sine trigonometry here: brainly.com/question/20367642

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5 0
2 years ago
Joe's Painting charges $100 plus $20 per hour to paint the exterior of your home. Steve's Painting charges $120 plus $15 per hou
Tanzania [10]

Joe's Painting: 20x + 100 = y

Steve's Painting: 15x + 120 = y

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y = total income

We can find when the two equations intersect by making them equal to each other. That means we put an equal sign in the middle. So, it would look something like this:

20x + 100 = 15x + 120

First, we have to move the 100 by subtracting it from both sides.

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Then, we need to move the 15x by subtracting it from both sides.

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Lastly, we need to divide 5 from both sides.

5x = 20/5

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Therefore, Joe and Steve would have to work for 4 hours in order for their models to be equal to each other.

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3 years ago
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X+2> _ 5, x >_5-2, x>_3

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the last is the answer
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3 years ago
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the answer is 9.74972315 I hope you have the right answer I hope this is helpful


7 0
3 years ago
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