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-BARSIC- [3]
3 years ago
7

Which system of equations has infinitely many solutions?

Mathematics
1 answer:
schepotkina [342]3 years ago
3 0

Answer: B.

4x - 2y = 8\\-4x + 2y = -8

Step-by-step explanation:

Let's solve your system by elimination.

4x−2y=8;−2x+2y=6

Add these equations to eliminate y:

   4x-2y=8  

 -2x+2y=6    

  2x=14

Substitute 7 for x in 4x−2y=8:  

(4)(7)−2y=8

−2y+28=8  (Simplify both sides of the equation)  

−2y+28+−28=8+−28  (Add -28 to both sides)

−2y=−20  

−2y/−2=−20/−2  (Divide both sides by -2)  

y=10

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Step-by-step explanation:

Let Rehman's  present age be x years.

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Answer:

1. $15.80

2. $12

3. $11.06

Step-by-step explanation:

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2. Buying 20 bars in packs of 5

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