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omeli [17]
2 years ago
15

Imagine telling a friend about your favorite coffee and donut shop. Your friend asks how much it charges for a cup of coffee and

a doughnut. While you can't remember how much each one costs individually, you do remember that's the last time you ordered one coffee and two donuts, your bill was $7.00. And today, when you bought two coffees and three Donuts, your bill came to $12.00.
Write a system of linear equations to represent the above situation.
Mathematics
1 answer:
Mama L [17]2 years ago
8 0

Answer:

c + 2d = $7.00

2c + 3d = $12.00

Step-by-step explanation:

Hello!

<u>Let:</u>

  • c = # of coffees
  • d = # of donuts

1 coffee and 2 donuts cost $7.00

This can be repesented by 1c + 2d = $7.00, or c + 2d = $7.00

2 coffees and 3 donuts cost $12.00

This can be represented by 2c + 3d = $12.00

<u>So, the system is :</u>

c + 2d = $7.00

2c + 3d = $12.00

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3 years ago
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g100num [7]

Answer:

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Step-by-step explanation:

In this case we need to perform a significance test for the standard deviation.

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