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BigorU [14]
3 years ago
13

PLEASE HELP!!!! Solve the equation. Check for extraneous solutions. Type your answers in the blanks. Show your work.

Mathematics
1 answer:
Licemer1 [7]3 years ago
5 0
|4x+3|=9+2x  if we square both sides, we can eliminate the absolute values signs...

16x^2+24x+9=81+36x+4x^2  subtract the right side from both sides

12x^2-12x-72=0  now we can factor

12(x^2-x-6)=0

12(x^2+2x-3x-6)=0

12(x(x+2)-3(x+2)=0

12(x-3)(x+2)

So:

x= -2 or 3


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PLZ HELP 20 POINTS NEED HLP NOW
Gnesinka [82]
Im pretty sure it would be D. t=3.2 x d. Because you would multiply the time and distance. 

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3 years ago
You work in a department store and sell a dress that is on sale for $58.80. If the regular price of the dress is $98, what is th
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Divide 58.80 by 98. The discount is 60%

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4 0
3 years ago
Read 2 more answers
Worth 30 points. Help a homie out
Sauron [17]

Answer:

Multiply the second equation by -3 to get -3x - 9y = -30.

Step-by-step explanation:

When eliminating, you need to find a term with the negative of that term to combine so that they cancel each other out. An example would be 3x in the first equation and (-3x) in another equation so that when added, it becomes: 3x-3x = 0.

In the second equation, you see that there is already an x there and you just need to make it become (-3x). Thus, you multiply the entire second equation by -3 to make -3x. Once you have done that, you can combine the two equations and eliminate 3x from the first equation.

3x + 5y = 30

-3x - 9y = -30

3x + 5y -3x - 9y = 30 + (-30)

0 - 4y = 30 - 30

-4y = 0

<em>You can find y and then x later on from here. </em>

8 0
3 years ago
How long is the wire that supports the tree?<br> 5.6 ft<br> 3.3 ft -
Nikolay [14]
The answer is 2.3 feet
6 0
3 years ago
Need help gotta turn in at midnight​
blondinia [14]

Answer:

c.

Step-by-step explanation:

If its isoceles, then LM is equal to LN. This means 3x-2 = 2x+1. 3x minus 2x is x. 2 plus 1 is 3. So x = 3. So it needs to be c or d. since LM and LN are the same answers, go to MN and find the answer. If you siubstitute 3 for x in 5x-2, then you get 13.

6 0
2 years ago
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