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3 years ago

-10 + -5 HEEEEEEEEEELP

Mathematics

2 answers:

Keith_Richards [23]3 years ago

8 0

The correct answer is -15.

trasher [3.6K]3 years ago

4 0

Ok its -15 . Its -10-5 because positive times a negative is a negative

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A safety regulation states that the maximum angle of elevation for a rescue ladder is 72°. A fire department's longest ladder is

Julli [10]

Answer:

The maximum safe rescue height is 104.6 feet above the height of the ground.

Step-by-step explanation:

Consider a triangle ABC where C is the point where the rescue ladder is standing and AB be the building and Ladder making an angle of 72° as shown.

We have to find the height of the building.

Let x be the height of building

Using Trigonometric ratio,

$\sin C=\frac{\text{Perpendicular}}{\text{Hypotenuse}}$

$\sin 72^{\circ}=\frac{AB}{BC}$

$\sin 72^{\circ}=\frac{x}{110}$

$x=110 \times \sin 72^{\circ}$

$x=104.6$

So, the maximum safe rescue height is 104.6 feet above the height of

the ground.

5 0

3 years ago

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Eddi Din [679]

Answer:

Sine of an angle =

opposite / hypotenuse

I this figure

AB is the opposite which is 12

BC is the hypotenuse which is 13

sine ∅ = 12/13

Therefore the sine ratio of the angle is

12/13

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7 0

3 years ago

Which choice is equivalent to the expression below ? sqrt -12

STALIN [3.7K]

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KiRa [710]

Answer:

(0,1) (0.333,0)

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Step-by-step explanation:

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3 years ago

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Rudiy27

Answer:

20% i am not 100% sure. if i am wrong, i am sorry

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3 years ago