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2 years ago

Percentage increase please use working out

Mathematics

1 answer:

S_A_V [24]2 years ago

7 0

Answer:

$15.22\%$

Step-by-step explanation:

The population in 1981 is 46 million.

In 2011, the population increased to 53 million.

The increase in population is (53 -46)million =7 million

Now we express 7 million as a percentage of 46 million

$=\frac{7}{46}*100\%$

$=0.1522*100\%$

=15.22%

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2 years ago

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Answer:

There is no significant difference between the two averages at 5% level

Step-by-step explanation:

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3 years ago

if you have 200 ¨toys¨ and your 2 brother stills 40 each and your mom throws away 90 how many ¨toys¨ do you have left

Y_Kistochka [10]

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5 0

3 years ago

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Kyle received the following course grades for 10 (three-credit) courses during his freshman year:

timofeeve [1]

Answer:

(a) The average grade point is 2.5.

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Step-by-step explanation:

The given data set is

4, 4, 4, 3, 3, 3, 1, 1, 1, 1

(a)

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$Average=\frac{\sum x}{n}$

$Average=\frac{4+4+4+3+3+3+1+1+1+1}{10}$

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Therefore the average grade point is 2.5.

(b)

$\text{Relative frequency}=\frac{\text{Frequency of number}}{\text{Total frequency}}$

The relative frequency table is show below:

x f Relative frequency

4 3 $\frac{3}{10}=0.3$

3 3 $\frac{3}{10}=0.3$

1 4 $\frac{4}{10}=0.4$

(c)

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$Average=\frac{0.3+0.3+0.4}{3}$

$Average=0.3333$

Therefore the mean of the relative frequency distribution is 0.3333.

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2 years ago

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yulyashka [42]

Answer:

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