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iragen [17]
2 years ago
15

X - 2y = 83x = 19 + 4yhow to answer this through elimination or substitution method?​

Mathematics
1 answer:
adell [148]2 years ago
4 0

Answer:

The solution of the given equations

x = 3 and y =-2.5

Step-by-step explanation:

<u><em>Step(i):-</em></u>

  x - 2y = 8 ..(i)

3x = 19 +4y ..(ii)

By using substitution method

substituting  x = 2y +8 in equation (ii)

 ⇒  3( 2y +8) = 19 +4y

⇒   6y +24 = 19 +4y

⇒  6 y - 4y = 19 - 24

⇒   2 y = -5

   y = \frac{-5}{2} = -2.5

<u><em>Step(ii):-</em></u>

Substitute 'y' = -2.5 in equation (i) , we get

         x - 2y = 8

   ⇒  x - 2( \frac{-5}{2}) =8

  ⇒  x = 8 -5

      x = 3        

<u><em>Final answer:-</em></u>

The solution of the given equations

x = 3 and y =-2.5

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Use the graph to find the following.
poizon [28]

The values of x at wich F(x) has local minimums are x = -2 and x = 4, and the local minimums are:

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<h3>What is a local maximum/minimum?</h3>

A local maximum is a point on the graph of the function, such that in a close vicinity it is the maximum value there. So, on an interval (a, b) a local maximum would be F(c) such that:

c ∈ (a, b)

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A local minimum is kinda the same, but it must meet the condition:

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A) We can see two local minimums, we need to identify at which values of x do they happen.

The first local minimum happens at x = -2

The second local minimum happens at x = 4.

B) The local minimums are given by F(-2) and F(4), in this case, the local minimums are:

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If you want to learn more about minimums/maximums, you can read:

brainly.com/question/2118500

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Step-by-step explanation:

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2 years ago
Read 2 more answers
Is <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B6%7D%20" id="TexFormula1" title=" \frac{3}{6} " alt=" \frac{3}{6} "
STALIN [3.7K]

Hey!

-----------------------------------------

Answer: Yes 3/6 is rational!

-----------------------------------------

Why? Well, because 3 and 6 are integers that don't repeat. 3/6 simplifies to 1/2 or 0.5 which doesn't repeat so it's rational.

-----------------------------------------

Hope This Helped! Good Luck!

8 0
3 years ago
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