3 years ago

8+4a+6.2−9a as a simpified equtions

Mathematics

1 answer:

goldenfox [79]3 years ago

5 0

Answer:

14.2-5a

Step-by-step explanation:

8+4a+6.2−9a

[4a-9a]

8-5a+6.2

[8+6.2]

14.2-5a

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From a height of 50 meters above sea level on a cliff, two ships are sighted due west. The angles of depression are 61° and 28°.

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Answer:

The ships are 66 meters apart.

Step-by-step explanation:

For the sake of convenience, let us label ships A and B

As shown in the figure, the distances to the ships from right triangles.

The distance to the ship A is $d_1$ and it is given by

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$d_1=\dfrac{50}{tan (61^o)}$

$\boxed{d_1= 27.71m}$

And the distance to the ship B is $d_2$ and is given by

$tan (28^o)= \dfrac{50}{d_2}$

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Therefore, the distance $d$ between the ships A and B is

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In other words, the ships are 66 meters apart.

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Read 2 more answers

ISSS THISSSSS CORRECTTT??????please help

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Answer:

I think that is correct, sorry is i get it wrong

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