3 years ago

Is 3.5 a rational number

Mathematics

1 answer:

Olegator [25]3 years ago

6 0

Answer:

Yes

Step-by-step explanation:

3.t can be written as a fraction, which is 7/2, so yes it is a rational number.

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son4ous [18]

Answer:

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b = 7.5 units

Step-by-step explanation:

By using mean proportional theorem in the ΔACB,

ΔACB ~ ΔADC ~ ΔCDB

$\frac{AD}{CD}=\frac{CD}{DB}$

$\frac{8}{6}=\frac{6}{a}$

a = $\frac{6\times 6}{8}$

a = 4.5

$\frac{AB}{CB}=\frac{CB}{DB}$

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Since a = 4.5

$\frac{4.5+8}{b}=\frac{b}{4.5}$

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