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seropon [69]
3 years ago
11

Karen purchased a prepaid phone card for $15. Long distance calls cost 11 cents a minute using this card. Karen used her card on

ly once to make a long distance call. If the remaining credit on her card is $13.68, how many minutes did her call last?
I need help on this!
Mathematics
1 answer:
Fiesta28 [93]3 years ago
4 0

Answer:

12 minutes

Step-by-step explanation:

You subtract 13.68 from 15 which gives you 1.32 which you then divide by .11 since it was eleven cents per minute on the phone and you end up getting 12.

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Answer:

16

Step-by-step explanation:

To solve a quadratic equation by using the completing the square method, the coefficient of the square term i.e x² must be one (1).

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We would simplify the equation;

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The value to be added = (8/2)² = 4² = 16

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or

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3 years ago
How do I solve 2x+3y=7, x-y=1
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