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3 years ago

Solve the following system of equations:

Mathematics

2 answers:

dsp733 years ago

4 0

The answer is no solutions

Paul [167]3 years ago

4 0

Answer:

Part 1) No solutions

Part 2)

part 3)

Step-by-step explanation:

Part 1) we have

-------> equation A

-------> equation B

Multiply the equation A by

-------->

Equation A and equation B represent parallel lines

therefore

Is a inconsistent system of equations

The system has no solution

Part 2) we have

-------> equation A

-------> equation B

Multiply equation A by

------> ------> equation C

Multiply equation B by

------> ------> equation D

Adds equation C and equation D

Part 3) we have

-------> inequality A

-------> inequality B

we know that

If a ordered pair lie in the solution set of the system of inequalities

then

the ordered pair must be satisfy the system of inequalities

case A)

substitute the value of x and the value of y in both inequalities

Verify inequality A

-------> is true

Verify inequality B

------> is not true

the point is not a solution

case B)

substitute the value of x and the value of y in both inequalities

Verify inequality A

-------> is not true

the point is not a solution

case C)

substitute the value of x and the value of y in both inequalities

Verify inequality A

-------> is true

Verify inequality B

------> is true

the point is a solution

case D)

substitute the value of x and the value of y in both inequalities

Verify inequality A

-------> is not true

the point is not a solution

1- no solution

2- 7

Hope this helps and please give me Brainliest

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stiv31 [10]

Answer:

Step-by-step explanation:

hello :

r+b=7... (*)

3.75r+2.75b=22.25.... (**)

use (*) : r = 7 - b

put this value in (**) :

3.75(7 - b)+2.75b = 22.25

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- b = -3.75

so : b = 3.75

but : r = 7 - b

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shepuryov [24]

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Step-by-step explanation:

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BaLLatris [955]

Answer:

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3 years ago

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Ber [7]

Answer:

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Step-by-step explanation:

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Amount charged for downloading an entire song album = y dollars
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y = 12.96 - 3x
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Putting the value of y from the first equation in the second we get
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