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Sergio [31]
3 years ago
10

Heather purchased a prepaid phone card for $30 . Long distance calls cost 14 cents a minute using this card. Heather used her ca

rd only once to make a long distance call. If the remaining credit on her card is $28.18 , how many minutes did her call last?
Mathematics
2 answers:
harina [27]3 years ago
7 0

Answer:

13 Minutes

Step-by-step explanation:

30-28.18=1.82

1.82 devided by 0.14= 13 minutes

answer 13 minutes

Ber [7]3 years ago
4 0
I belive it took 13 minuites but I’m not positive
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What is the volume of a cone that has a diameter of 18 centimeters and a height of 12 centimeters?
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Step-by-step explanation:

❀ \underline{ \underline{ \text{Given}}} :

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  • Height of a cone ( h ) = 12 cm
  • Radius of a cone ( r ) =
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❀ \underline{ \underline{ \text{To \: find}}} :

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✏ \underline{ \underline{ \text{Solution}}} :

\boxed{ \sf{Volume \: of \: a \: cone = \pi \:  {r}^{2}  \:  \frac{h}{3}}}

Plug the values and then multiply !

→ \tt{ \frac{22}{7}  \times  {9}^{2}  \times  \frac{12}{3}}

→ \tt{3.14 \times 81 \times 4}

→ \tt{1017.36 \:  {cm}^{3}}

\pink{ \boxed{ \boxed{ \tt{Our \: final \: answer : 1017.36 \:  {cm}^{3}}}} }

Hope I helped ! ツ

Have a wonderful day / night ! ♡

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7 0
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How do I solve this equation quick with an easy method?
Pani-rosa [81]

Answer:

4/(3(x-2))

Step-by-step explanation:

3x^2-21x+30=3(x^2-7x+10)=3(x-5)(x-2)

3x-15=3(x-5)

----------------------------

So the common denominator must be 3(x-5)(x-2)

2(x-2)=2x-4

Add the numerators,

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