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Aleksandr-060686 [28]
3 years ago
9

What is the perimeter of △LMN?

Mathematics
1 answer:
frutty [35]3 years ago
5 0
Its D on edg. I don’t know of this right or wrong
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Докажите тождество 3 n ( 3 m − 2 n ) + 6 m 2 = ( 6 m − 3 n ) ( 2 n + m ) .
valentina_108 [34]

Answer:

The answer is 0

Step-by-step explanation:

3n(3m-2n) + 6m^2= (6m-3n)(2n+m)

By expansion

9mn - 6n^2 + 6m^2 = 12mn + 6m^2 -6n^2 - 3mn

By collecting like terms

9mn - 12mn + 3mn - 6n^2 + 6n^2 + 6m^2 - 6 m^2 = 0

-3mn + 3mn=0

Therefore the simplification of the expansion gives us 0

5 0
3 years ago
a store has 30 boxes of melon each box has 4 bags each bag holde 2 melons what is the total number of melon in the store?
Zarrin [17]
180 melons

4 x 2 x 30
8 0
3 years ago
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10x-4x+9>4x-(5-9x) plzzz help
alexdok [17]

Answer:

Hope this helps. Let me know if it doesn't and I'll try to help out. :)

7 0
3 years ago
For which value of x is the equation 3(3 + x) = 15 + x true?<br> A) 1 <br> B) 2 <br> C) 3 <br> D) 4
natulia [17]

Answer:

C

Step-by-step explanation:

3(3 + x) = 15 + x

Open bracket

9 + 3x = 15 + x

Collecting like terms

3x - x = 15 - 9

2x = 6

Dividing by 2

x = 6/2

x = 3

3 0
3 years ago
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If 3t-7=5t, then 6t=?<br><br> Explain how you got your answer!
kirill [66]

Answer:

6t = -21

Step-by-step explanation:

3t-7 = 5t simplifies by subtracting 5t on both sides, then adding 7 on both sides:

3t -5t  -7 +7 = 5t-5t+7

-2t = 7

t = -7/2

Then 6t = 6*-7/2 = -21

6 0
3 years ago
Read 2 more answers
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