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MariettaO [177]
3 years ago
13

What is the solution to 3x+2=x+8

Mathematics
1 answer:
dedylja [7]3 years ago
6 0
That’s the answer and i showed the work hoped this helped!!!

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Which of the following shows the extraneous solution(s) to the logarithmic equation? log4 (x) + log4(x - 3) = log4 (-7x + 21)
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First join the log4 on the left:

log4( x*(x-3) = log4(-7x+21)

Then x = -7, works: -7*(-10)=70 = -7*(-7)+21

x=-3, 18 = 42, does not work

x=3 0=0 works,

However, when one puts x = -7 in the *original* exression, log4(-7) or log4(-10) do not exist (you know why?). So x= -7 is extraneous.

Now x=3 gives log4(0) on the left and right, which does not exist.

So, C is the answer, both are extraneous. Seem to work but indeed don't work in the *original* equation
 
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Answer:6

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the mall is 84 meters long. the post office is 38 meters long. how much longer is the mall than the post office
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Step-by-step explanation:

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how much longer is the mall than the post office=84-38= 46m

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