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nexus9112 [7]
3 years ago
13

Phil made a long distance phone call to his grandmother. The first 5 minutes coast 3$ and each minute after that. cost 50 cents.

If the call was 12 how long did they talk
Mathematics
1 answer:
Nat2105 [25]3 years ago
7 0
12-3=9
9.00/.50= 18 mins
18+5 = 23 minutes
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How many different 7-digit telephone numbers are possible if the first digit cannot be 0, but the last two digits must be 0?
solniwko [45]
The first digit can only range from 1-9, resulting in 9 possible options. The next four digits can range from 0-9, resulting in 10 options for each. Since the last two digits remain the same, they do not affect the sample size. Using the fundamental counting principle, we can find the amount of telephone numbers possible in the following equation.
9 \times 10 \times 10 \times 10 \times 10 \times 1 \times 1 \\ 90000

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3 years ago
A 4.5 kg cat requires medication at a dose rate of 5 mg/kg once daily for the next 7 days. The tablets are available in 10 mg st
Marta_Voda [28]

Answer:

<u>Approximately 16 tablets of medicine</u>

Step-by-step explanation:

Based on the information above , we can use a <u>Rule of Three</u> to first figure out how many mg the cat would need to ingest per day.

\frac{5mg}{1kg} = \frac{x}{4.5kg}

\frac{5mg*4.5kg}{1kg} = 22.5mg

Now we see that the cat needs to take a daily dose of 22.5mg. Since the Tablets come at a strength of 10 mg per tablet then,

22.5 / 10 = 2.25

The cat would need to take 2.25 tablets per day. Since she needs to take the dose for the next 7 days then,

2.25 * 7 = 15.75

She would need to take<u> approximately 16 tablets of medicine</u> during the week .

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

5 0
3 years ago
How do you divide a fraction
sveta [45]
Hey, 25equivelv!

If you know how to multiply a fraction, you will be able to divide it as well. If you do not know how to multiply a fraction, look it up or message me.

I say that if you know how to multiply fractions you know how to divide them because dividing is basically multiplication backwards, so in fraction terms, it's multiplying by the reciprocal. If you don't know what that is, multiplying by the reciprocal is that same as flipping the second fraction and multiplying.

Watch this youtube video for more: https://www.youtube.com/watch?v=q4vEI4mk8g0

Hope I helped!

~Olivia
8 0
3 years ago
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astraxan [27]
5/100 = 0.056 sales tax

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$163 + 9.128 = $172.128 total amount she paid.

Hope this helps!

7 0
3 years ago
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9. Write an equation for the line that is parallel to the given line and that passes through the given point.
timurjin [86]

Answer:

  y -11 = 2(x -3)

Step-by-step explanation:

The slope of the given line is the x-coefficient: 2. The parallel line will have the same slope.

When you know the slope and a point on the line, it is convenient to use the point-slope form of the equation of a line:

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Your line's equation is ...

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7 0
3 years ago
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