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RSB [31]
2 years ago
13

Evelyn has a summer babysitting job that pays $12 per hour. She wants to know how many hours she has to babysit to afford a new

bike. The bike she wants costs $120.
Mathematics
1 answer:
Alja [10]2 years ago
3 0

Answer:

10

Step-by-step explanation:

You just gotta do 120/12 which is 10

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Hi there!

The way that an infinite number of solutions is achieved is when the two equations, when solved together, get an answer which is just a number equal to the same number. To do this, first substitute 6x-b in for y in the second equation.

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Now, we see that b needs to be equal to -3 when multiplied by -1/2. When both sides are divided by -1/2, b becomes equal to 6. Thus, b must be 6.

Check work:

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Answer:

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