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OLEGan [10]
3 years ago
10

K/5.6+ 41.5 = 10.8 The solution is k=​

Mathematics
2 answers:
Contact [7]3 years ago
4 0

Answer: The solution is k = -171.92.

Reika [66]3 years ago
3 0

Answer:

k = - 171.92

Step-by-step explanation:

\frac{k}{5.6} + 41.5 = 10.8 ( subtract 41.5 from both sides )

\frac{k}{5.6} = - 30.7 ( multiply both sides by 5.6 to clear the fraction )

k = - 171.92

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Step-by-step explanation:

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Step-by-step explanation:

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Help with #7 please I don’t understand
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A

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(2x^2 + 3x - 4) (x + 4)


FOIL.


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The midpoint of segment AB is (4, 2). The coordinates of point A are (2, 7). Find the coordinates of point B.
erastovalidia [21]

Answer:

<h3>The option B) is correct</h3><h3>Therefore the coordinate of B(x_2,y_2) is (6,-3)</h3>

Step-by-step explanation:

Given that the midpoint of segment AB is (4, 2). The coordinates of point A is (2, 7).

<h3>To Find the coordinates of point B:</h3>
  • Let the coordinate of A be (x_1,y_1) is (2,7) respectively
  • Let the coordinate of B be (x_2,y_2)
  • And Let M(x,y) be the mid point of line segment AB is (4,2) respectively
  • The mid-point formula is
<h3>M(x,y)=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})</h3>
  • Now substitute the coordinates int he above formula we get
  • (4,2)=(\frac{2+x_2}{2},\frac{7+y_2}{2})
  • Now equating we get

4=\frac{2+x_2}{2}                    2=\frac{7+y_2}{2}

Multiply by 2 we get                             Multiply by 2 we get  

4(2)=2+x_2                                           2(2)=7+y_2

8=2+x_2                                                4=7+y_2

Subtracting 2 on both

the sides                                    Subtracting 7 on both the sides

8-2=2+x_2-2                                4-7=7+y_2-7

6=x_2                                                       -3=y_2

Rewritting the above equation      Rewritting the equation

x_2=6                                                      y_2=-3

<h3>Therefore the coordinate of B(x_2,y_2) is (6,-3)</h3><h3>Therefore the option B) is correct.</h3>

7 0
3 years ago
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