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4vir4ik [10]
3 years ago
7

Linda purchased a prepaid phone card for $30. Long distance calls cost 13 cents a minute using this card. Linda used her card on

ly once to make a long distance call. If the remaining credit on her card is $25.45, how many minutes did her call last?
Mathematics
1 answer:
Basile [38]3 years ago
5 0

Answer:35 minutes

Step-by-step explanation:

$30.00 - $25.45= $4.55/$.13= 35 minutes

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What does h equal in the equation S=2πr2+2πrh?
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A

Step-by-step explanation:First, subtract

2

π

r

2

from each side of the equation to isolate the

h

term:

S

−

2

π

r

2

=

2

π

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h

+

2

π

r

2

−

2

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2

S

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+

0

S

−

2

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r

2

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r

2

2

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h

2

π

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S

−

2

π

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2

2

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2

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2

π

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−

2

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2

2

π

r

=

h

h

=

S

−

2

π

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2

2

π

r

Or

h

=

S

2

π

r

−

2

π

r

2

2

π

r

h

=

S

2

π

r

−

2

π

r

2

2

π

r

h

=

S

2

π

r

−

r

2

r

h

=

S

2

π

r

−

r

4 0
4 years ago
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