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lana [24]
4 years ago
9

jina purchased a card for 15.00 long distance calls cost 0.21 per minute she used her card once her remaining balance is 12.27 h

ow many minutes did her call last
Mathematics
2 answers:
Paul [167]4 years ago
6 0

Answer:

If Jina purchased a card that was $15.00 for long distance calls and has $12.27 left, then we need to figure out how much she spent in that time period first

15.00-12.27= 2.73, Jina spend $2.73 on her last call

Now we want to take 2.73/0.21 to see how many minutes she spent on the call

2.73/0.21=13

Jina spent 13minutes on her last call

Hope this helps ;)

Step-by-step explanation:

Sladkaya [172]4 years ago
3 0

Answer:

Step-by-step explanation:

15.00 - 12.27

divided by 0.21

Answer = 13 minutes

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A 1L IV contains 60meq of kcal. The IV was discontinued after 400ml has infused. How much lvl did the patient receive
Leya [2.2K]

If a 1L IV contains 60meq of kcal and the IV was discontinued after 400ml has infused, then the amount of IV received by the patient is 24meq of kcal.

Calculation for the Amount of IV

It is given that,

1L IV contains 60meq of kcal

⇒ 1000 mL of IV contains 60meq of kcal

⇒ 1 mL of IV will contain 60 / 1000 meq of kcal

As per the question,

The amount of IV infused in the patient = 400 mL

⇒ The amount of IV received by the patient in meq of kcal = 400 × (60 / 1000)

= 4 × 6

= 24 meq of kcal

Hence, the patient receives 24meq of kcal amount of IV.

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melamori03 [73]

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nalin [4]
First equation
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4 years ago
the average mark of three pupils are 68. what is the ratio of 5:4:3. how many marks did the best student get? HELP ME! ​
noname [10]

Answer:

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Step-by-step explanation:

Average: The sum of all the numbers divided by the number of numbers

If the ratio of the scores is 5 : 4 : 3, let's just set it as 5x : 4x : 3x

Then using the definition of an average, we can write this equation.

(5x + 4x + 3x) / 3 = 68

Multiply both sides by 3.

5x + 4x + 3x = 68 * 3

Simplify.

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Now, substitute x = 17 into the original scores (5x, 4x, and 3x)

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Just in case, let's check this answer. Find the average of the 3 test scores.

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Thus, the answers are correct

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