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2 years ago

5. A man is 6 times as old as his daughter. The man's son is 4 years older than his sister.

Mathematics

1 answer:

maxonik [38]2 years ago

6 0

Answer:

82-10=72

72:6=12 daughter`s age

12+4=16 son`s age

16+12= 28

72-28=44 man`s age

Step-by-step explanation:

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Step-by-step explanation:

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What is the length of BD?

I am Lyosha [343]

Answer:

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Step-by-step explanation:

Trigonometric Ratios

This problem will be solved by the use of a trigonometric ratio called sine because it relates the opposite side of a given angle with the hypotenuse of the triangle.

Selecting the angle of 60° in triangle ABD:

Sine Ratio

$\displaystyle \sin 60^\circ=\frac{\text{opposite leg}}{\text{hypotenuse}}$

$\displaystyle \sin 60^\circ=\frac{BD}{20}$

Solving for BD:

$\displaystyle BD=20\sin 60^\circ$

Since

$\sin 60^\circ=\frac{\sqrt{3}}{2}$

$\displaystyle BD=20\frac{\sqrt{3}}{2}$

Simplifying:

$\boxed{\displaystyle BD=10\sqrt{3}}$

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Step-by-step explanation:

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