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vaieri [72.5K]
2 years ago
8

Isabel purchased a prepaid phone card for $20. Long-distance calls cost 18 cents a minute using this card. Isabel used her card

only once to make a long-distance call. If the remaining credit on her card is $14.24, how many minutes did her call last?
Mathematics
1 answer:
Mandarinka [93]2 years ago
7 0

Answer:

20 - .07c = 17.13

20 - 17.13 = 2.87

2.87/7 = 41

Her call took 41 minutes

Step-by-step explanation:

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Answer:

The distance between (-9, 8) and (-3, -1) will be:

\:d=3\sqrt{13} units

Step-by-step explanation:

Given the points

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Finding the distance between (-9, 8) and (-3, -1)

d\:=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}

   =\sqrt{\left(-3-\left(-9\right)\right)^2+\left(-1-8\right)^2}

   =\sqrt{\left(-3+9\right)^2+\left(-1-8\right)^2}

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   =\sqrt{117}

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Therefore, the distance between (-9, 8) and (-3, -1) will be:

\:d=3\sqrt{13} units

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Answer:

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Step-by-step explanation:

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