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Feliz [49]
3 years ago
11

3x+y=15 3x-y=15 (using elimination method)

Mathematics
2 answers:
morpeh [17]3 years ago
5 0

Answer:

x = 5

y = 0

Step-by-step explanation:

3x + y = 15

3x -y = 15

Add the two equations;

6x = 30

Inverse operations;

6x = 30

/6        /6

x = 5

Back substitute;

3(5) + y = 15

15 + y = 15

y = 0

Yanka [14]3 years ago
4 0

Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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5.25^2=27.5625

  • multiply with pi

27.5625*3.14=86.54625

rounded 86.5 in

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2 years ago
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tia_tia [17]
4/7
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8 0
3 years ago
Read 2 more answers
Could anybody please help me on this one? I'm really stuck on this. 
san4es73 [151]
( c^2 )^3 = 64 <=>(  c^2 )^3 = 4^3 <=> c^2 = 4 <=> c = 2 or c = -2.
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14 + w is the same as which expression?
Vanyuwa [196]

Answer:

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