4 years ago

Write an expression to 3(7 + 4g)

Mathematics

1 answer:

mafiozo [28]4 years ago

4 0

Answer:

Step-by-step explanation:

21+12g

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An h = 135-ft tower is located on the side of a mountain that is inclined 32° to the horizontal. A guy wire is to be attached to

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171 foot

Step-by-step explanation:

We are given that

Height of tower=135 ft

AC=55 ft

Let x be the length of shortest length of wire.

The angle of inclination of mountain with horizontal = $32^{\circ}$

The angle between sides AB and BC= $90+32=122^{\circ}$

Exterior angle is equal to sum interior angles of a triangle on the opposite sides .

We have to find the value of x.

We know that law of cosine

$c=\sqrt{a^2+b^2-2ab cos\theta}$

Substitute the values in the given formula we get

$x=\sqrt{(135)^2+(55)^2-2(135)(55)cos 122}$

$x=170.64 ft$

Hence, the length of wire needed=171 foot

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Step-by-step explanation:

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3 years ago

Find the area of a rectangle whose base is 15 ft and its height is 4 ft.

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Answer:

Step-by-step explanation:

15 times 4 equals 60

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