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Dahasolnce [82]
3 years ago
12

Which coordinate pair is (3,16) reflected across the y-axis?

Mathematics
2 answers:
seraphim [82]3 years ago
4 0

Answer:

(-3, 16)

Step-by-step explanation:

If it is reflected off the y - axis, the x coordinates change.

It becomes (-3, 16)

spin [16.1K]3 years ago
3 0

Answer:  ( -3,16)

Step-by-step explanation:

(3,16) if you reflect this across the y axis,the x changes sign.

so the x changes from 3 to negative three but the y stays the same

(-3,16)

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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
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Answer:

<h2>w = -8</h2>

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

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Answer:

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Step-by-step explanation:

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