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3 years ago

-1 is it a rational

Mathematics

2 answers:

Yuki888 [10]3 years ago

8 0

Yes -1 is a rational number. We can express it as a fraction of two whole numbers

One way is -1 = -1/1

Firlakuza [10]3 years ago

4 0

Yes it is I don’t know the exact exclamation but I know it’s rational

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Step-by-step explanation:

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Simplify both sides of the equation.

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Katyanochek1 [597]

The graph of the equation is the set of all points that are solutions to the equation. The point (−6,7)(−6,7) is on the graph of the equation. True
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3 years ago

Age (years) Population Under 15 2600 15 - 64 16000 Over 64 4000 Calculate the child dependency ratio from the chart above. Round

Brums [2.3K]

Answer:

16.25%

=0.163 (correct to 3 decimal places)

Step-by-step explanation:

The child dependency ratio of a population is defined as the number of children (Under 15 years) divided by the working-age population (15–64 years old).

$\mathrm{ Child}\;\mathrm{ dependency}\;\mathrm{ ratio}=\dfrac{{\mathrm{ Population}\,\left( \text{Under 15} \right)}}{{\mathrm{ Population}\,\left( {15-64} \right)}}\times 100$

From the given table:

Population Under 15 years = 2600

Population of the working class (between 15-64) = 16000

Therefore:

$\mathrm{ Child}\;\mathrm{ dependency}\;\mathrm{ ratio}=\dfrac{2600}{16000}\times 100\\\\=16.25\%$

=0.163 (correct to 3 decimal places)

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3 years ago