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aliina [53]
3 years ago
8

A firefighter is attempting to escape a burning building. If the window is of the man's apartment is 18 feet above the ground an

d the ladder is 25 feet long, what is the angle of elevation?
Mathematics
1 answer:
lara [203]3 years ago
8 0

Answer:

37.75⁰

Step-by-step explanation:

Height of the building = 18 feet (vertical height)

Height of the ladder = 25 feet (Hypotenuse)

We solve this using tan θ = \frac{adjacent}{hypotenuse}

therefore θ = tan⁻¹ (\frac{18}{25})

θ (Angle of elevation) = 37.75⁰

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umka2103 [35]

Answer:

I think its C

Step-by-step explanation:

By learning characteristics of a speech, It should be easier to determine the impact of a specific speech.

3 0
3 years ago
Read 2 more answers
A FEW MATH QUESTIONS ! PLEASE EXPLAIN ANSWERS ! (:
7nadin3 [17]

answers

1) 70

2) 3,840

3) 24

4) 72


<u>Explanation</u>

Q1

The surface area of a cone is given by;

S.A = 2Πrl + Πr²

Where r is the radius of the base and l is the lateral height.

Πr² = area of the base = 20 in²

2Πrl = Area of the lateral surface

         = 2.5 × 20

          = 50

Area of the cone = 50 + 20

                            = 70 in²

Q2

The sides of the Pythagorean triangle with legs of 12 and 16.

The 3rd side will be;

c = √(12² + 16²)

  = √400 = 20

Volume = 12 × 16 × 20

              = 3,840

Q3

The volume of a cone is given by;

volume = 1/3 Π r² h

This shows that the volume of a cone is a third the volume of the cylinder.

∴ Volume of the cylinder = 12 × 3

                                            = 24 ft³

Q4

The volume of any regular figure is;

Volume = base area × height

When the dimensions area usually 3. Let these dimensions be x, y and z.

∴ volume  = x × y × z = 9

  Doubling the dimensions;

Volume = 2x × 2y × 2z = 2 × 2 × 2 × 9

             = 8 × xyz = 8 × 9

             = 72 ft²



3 0
3 years ago
Read 2 more answers
Factor completely 2X^3-2x-40
Sholpan [36]
2X^3-2x-40=0
Hope this helps
6 0
3 years ago
Which of the following is a proportion? 9/12= 8/10 3/4= 9/12 6/8= 8/12 12/18= 9/16
solong [7]

Answer:

The proportion is 3/4=9/12

Step-by-step explanation: For proportions you need to write it in a ratio, after doing that, you look at the outside numbers on the ratio on this case it is 3 and 12, multiply that and you get 36, after that do the same with the inside numbers to get another 36.

4 0
2 years ago
HELP PLZ THIS IS DUE IN 3 MIN
yanalaym [24]

Answer:

A

Step-by-step explanation:

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3 years ago
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