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Pavel [41]
3 years ago
11

Solve by the linear combination method (with or without multiplication)

Mathematics
2 answers:
AURORKA [14]3 years ago
8 0
6x-2y=2
-3x+4y=5

2(-3x)+2(4y)=2(5)
-6x+8y=10

6x-2y=2
-6x+8y=10
6y=12
y=2

6x-2(2)=2
6x-4=2
6x=6
x=1

y=2 and x=1
kifflom [539]3 years ago
6 0

Answer:

i dont understand


Step-by-step explanation:


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Answer:

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Step-by-step explanation:

Given

y = \frac{x+4}{(x+5)(x+11)}

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Equating the denominator to zero and solving gives the values that x cannot be, that is

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Equate each factor to zero and solve for x

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Thus

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4 0
3 years ago
5. Sean has 56 bills in his pockets. The bills are only fives and tens.
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Answer:

He have 43 bills of 10 and 13 bills of 5

Step-by-step explanation:

5x + 10y = 495

x + y = 56

Isolate x:

x = 56 - y

Substitute in the first equation:

5(56 - y) +10y = 495

280 -5y +10 y = 495

5y = 495 -280

5y = 215

y = 215/5

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Now substitute the value of y to find x:

x = 56 - y

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