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irga5000 [103]
3 years ago
5

What number is 50%of 30

Mathematics
2 answers:
jonny [76]3 years ago
8 0
50% of 30 is 15. 50% of anything is its half


Sophie [7]3 years ago
4 0
It would be 15. 50% is the same as half. So half of 30 is 15.
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Pani-rosa [81]

Answer: \frac{12}{7}\ \text{hours}

Step-by-step explanation:

Given

New mail carrier takes 4 hours for delivery i.e.

New mail carrier completes \frac{1}{4} part of work in 1 hour

Old mail carrier takes 3 hours for delivery  i.e.

mail carrier completes \frac{1}{3}  part of work in 1 hour

If they work together, they complete the work in x hours i.e.

\Rightarrow \dfrac{1}{x}=\dfrac{1}{4}+\dfrac{1}{3}\\\Rightarrow \dfrac{1}{x}=\dfrac{3+4}{12}\\\Rightarrow x=\dfrac{12}{7}\ \text{hours}

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3 years ago
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162

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marusya05 [52]

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Step-by-step explanation:

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3 years ago
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mixas84 [53]

Answer:

Step-by-step explanation:

5x + 13y = 232

12x + 7y = 218

For each choice:

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b) The first equation can be multiplied by 7 and the second equation by 13 to eliminate y. So we have

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<em>(If we subtract, this is Yes)</em>

<em></em>

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Answer: p + 5 = new amount

Step-by-step explanation:

You have to write it the way it's read

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