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LenaWriter [7]
3 years ago
14

Question 9(Multiple Choice Worth 1 points) (01.06 LC) Solve x -5y = 6 for x.​

Mathematics
1 answer:
vladimir1956 [14]3 years ago
5 0
The answer is x = 6 + 5y
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Write an eqution to the table.<br> y x<br> 3 1<br> 1.5 2<br> 1 3
hram777 [196]

Answer:

f(x)=0.5x^2-3x+5.5

Step-by-step explanation:

We can see by some observation that this is not linear because the slopes aren't constant.

So, let's see if it's quadratic. Suppose that it is and the function we want to find is: f(x)=ax^2+bx+c

Plug in some of the given values into the equation:

3 = a + b + c               ------------ eq 1

1 = 9a + 3b + c           ------------ eq 2

1.5 = 4a + 2b + c        ------------ eq 3

Let's multiply eq 3 by 2 and then subtract it from equation 2:

   1 =  9a + 3b + c

-  3 = 8a + 4b + 2c

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

  -2 = a - b - c

Now, add this equation to eq 1:

   -2 = a - b - c

+   3 = a + b + c

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

    1 = 2a

    a = 1/2 = 0.5

Now, plug this value of a back into both eq 3 and eq 1:

Eq 3: 1.5 = 4 * 0.5 + 2b + c  ⇒  1.5 = 2 + 2b + c  ⇒  -0.5 = 2b + c     ----- eq 5

Eq 1: 3 = 0.5 + b + c  ⇒  b + c = 2.5   ------ eq 4

So, we have a system of linear equations. Subtract eq 4 from eq 5:

    2b + c = -0.5

-      b + c = 2.5

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

      b = -3

Substitute this value of b into b + c = 2.5 and solve for c:

-3 + c = 2.5

c = 5.5

So, a = 0.5, b = -3, and c = 5.5. Now, our equation is:

f(x)=0.5x^2-3x+5.5

Hope this helps!

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Answer:

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Step-by-step explanation:

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The last of my points i really enjoyed being here just the stress of it goodbye fellow brainlest
GarryVolchara [31]

Answer:

Bye

Step-by-step explanation:

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IgorLugansk [536]

Answer:

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Step-by-step explanation:

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PLEASE HELP !!!!!Factor 16x2 - 6x - 7.
Trava [24]

Answer:

Step-by-step explanation:

Here you go mate

Step 1

16x^2-6x-7  Question

Step 2

16x^2-6x-7   Factor

answer

(2x+1)(8x-7)

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