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riadik2000 [5.3K]
3 years ago
5

If you take a class and have three marking periods in the class and in the first period your average grade was a 85.56 the secon

d marking period your average was a 60.57 and then for the final marking period your average was a 63.63 what will be your overall average?
Mathematics
1 answer:
Talja [164]3 years ago
3 0
69.92 when you add them all up and divide it you get 69.92
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In 2010, the population of Kingsford was 8000. By 2014 the population had increased by 15% and 2/5 of the population was age 12
Anastasy [175]
<h2>Hello!</h2>

The answer is: The population age 12 or under was 3680.

<h2>Why?</h2>

If in 2010 the population of Kignsford was 8000, and by 2014 the population had increased by 15% we need to calculate the total population and then, calculate how many people was age 12 or under.

We must remember that we cannot work with percentage values, so, to make 15% a real number, we need to divide it by 100:

15(Percentage)=\frac{15}{100}=0.15

So,

Calculating the population by 2014, we have:

Population_{2014}=Population_{2010}+ Population_{2010}*0.15

Then, substituting we have:

Population_{2014}=8000+ 8000*0.15=9200

Now, calculating the population that was age 12 or under, knowing that it was 2/5 of the total population, we have:

Population=TotalPopulation*\frac{2}{5}\\\\Population=9200*\frac{2}{5}=3680

So, the population age 12 or under was 3680.

Have a nice day!

6 0
3 years ago
ABCD is a parallelogram. Find the value of x, y and z.​
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Step-by-step explanation:

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Answer:

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