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2 years ago

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Question 17 Multiple Choice Worth 1 points) (06.02 LC) Which of these is the algebraic expression for "5 times the sum of 2 and

y?"
A. 5 • 2 + y
B. 2 + 5 • y
C. 2(5 + y)
D. 5(2 + y)

1 answer:

Setler [38]2 years ago

3 0

Answer:

D 5(2 + y)

Step-by-step explanation:

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algol [13]

Answer:

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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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