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3 years ago

Why do we express rational Numbers as decimals?

Mathematics

1 answer:

cestrela7 [59]3 years ago

3 0

Answer:

Repeating decimals are considered rational numbers because they can be represented as a ratio of two integers. The number of 9's in the denominator should be the same as the number of digits in the repeated block.

Step-by-step explanation:

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(1) Write the ratio of the volumes of the 500ml bottle and the 2-litre bottle of milk in its simplest form.

Vadim26 [7]

Answer:

1] 1 : 4

2] 250ml

Step-by-step explanation:

1] 500ml : 2 litre

First, the units must be the same.

2 litre = 2000ml

500ml : 2000ml

5 : 20

1 : 4

2] $\frac{2}{4}$ × 500

= 250ml

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3 years ago

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olga2289 [7]

Answer:

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Step-by-step explanation:

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3 years ago

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Genrish500 [490]

Answer:

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4 years ago

Lyme disease is an inflammatory disease that results in a skin rash and flulike symptoms. It is transmitted through the bite of

neonofarm [45]

Answer:

Step-by-step explanation:

Let cases of Lyme disease = x

x = 2, 1, 3, 4, 5, 1, 2, 1, 6, 5, 4, 1

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y = 0, 1, 2, 1, 3, 5, 2, 3, 3, 3, 1, 0

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$\sum xy = 55$

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$S_{xy} = \sum xy - ( \sum x \sum y)/n\\S_{xy} = 55 - (35*24)/12\\S_{xy} = -15$

b) Linear correlation between Lyme disease and drowning deaths.

$r = \frac{S_{xy}}{\sqrt{S_{xx}S_{yy}} }$

r = -15/ √(24*36.92)

r = -0.504

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3 years ago

Jamie had 4 fith of a spool of twin.He then used half of a spool of twin to make freindship knots.Heclaims to have 3 tenth of th

Rom4ik [11]

Jamie's claim isn't reasonable. This is because half of 4/5 is 4/10 and if you simplify it, it is 2/5.

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3 years ago