2 years ago

For what value of K is the point (-2, 3) in the graph of the equation KX - 5Y = one?

Mathematics

1 answer:

Harrizon [31]2 years ago

6 0

Answer:

Step-by-step explanation:

Substitute x and y

K (-2) -5 (3) = 1

-2k- 15 = 1

-2k = 1+15

-2k =16

k= -8

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Ernesto solves the equation below by first squaring both sides of the equation. \sqrt{\dfrac{1}{2}w+8}=-2 2 1 w+8 =−2square

algol [13]

Answer:

Step-by-step explanation:

Given the equation solved by Ernesto expressed as $\sqrt{\dfrac{1}{2}w+8}=-2$ , the extraneous solution obtained by Ernesto is shown below;

$\sqrt{\dfrac{1}{2}w+8}=-2\\\\square\ both \ sides \ of \ the \ equation\\(\sqrt{\dfrac{1}{2}w+8})^2=(-2)^2\\\\\dfrac{1}{2}w+8 = 4\\\\Subtract \ 8 \ from \ both \ sides\\\\\dfrac{1}{2}w+8 - 8= 4- 8\\\\\dfrac{1}{2}w= -4\\\\multiply \ both \ sides \ by \ 2\\\\\dfrac{1}{2}w*2= -4*2\\\\w = -8$

Hence, the extraneous solution that Ernesto obtained is w = -8

4 0

3 years ago

louis wants to carpet the rectangular floor of his basement. The basement has an area of 864 square feet. The width of the basem

ivolga24 [154]

$x-\ length\\\\
\frac{2}{3}x-\ width\\\\
Area=\ length*width\\\\
864=x*\frac{2}{3}x\\\\
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864*\frac{3}{2}=x^2\\\\
432*3=x^2\\\\
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x=36ft\\\\
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