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Fittoniya [83]
2 years ago
8

HELP PLEASE

Mathematics
1 answer:
DENIUS [597]2 years ago
7 0

Answer:

HELP PLEASE

In this unit, you've learned about trigonometry and its applications to right triangles and real-world scenarios that can be modeled

with right triangles. In such scenarios, sometimes we refer to an angle of elevation or depression. Both types of angles have one side

that is horizontal. From this side, the angle may open up (angle of elevation) or open down (angle of depression). These images show

the difference between the two.

angle of depression

angle of elevation

In this task, you'll apply what you've learned to answer questions about a skateboard ramp that you and your friends are building for

your community skate park. The ramp will lead up to a platform. You'll be using a piece of wood that's 3.5 meters long for the ramp,

and the ramp's angle of elevation will be 28°. Use this figure as a model to answer the questions that follow.

B

platform

ramp

28°

A

C

Part A

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SOMEONE PLEASE HELP!
Andrews [41]

Answer:

17.2°

Explanations

To find angle A, use the cosine rule.

a^2 = b^2 + c^2 - 2 × a × c cos A

4^2 = 7^2 + 10^2 - 2 × 7 × 10 cos A

16 = 49+ 100 - 140 × cosA

16 = 149 - 140cosA

16- 149 = - 140cosA

-133 = - 140cosA

cosA = 133/140

cosA = 0.95

A = 17.2°

7 0
2 years ago
Here are the ingredients needed to make 8 pancakes.
jeka57 [31]

Answer:

a) 1000mL Milk

b) 60g Butter

Step-by-step explanation:

a) 250mL*4=1000mL

b) 5g*12=60g

8 0
3 years ago
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8% of what number is 2 - 268832
8 0
3 years ago
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A container in the shape of this cuboid holds 2 litres of water.
zysi [14]

Given:

Volume of cuboid container = 2 litres

The container has a square base.

Its height is double the length of each edge on its base.

To find:

The height of the container.

Solution:

We know that,

1 litre = 1000 cubic cm

2 litre = 2000 cubic cm

Let x be the length of each edge on its base. Then the height of the container is:

h=2x

The volume of a cuboid is:

V=l\times w\times h

Where, l is length, w is width and h is height.

Putting V=2000,\ l=x,\ w=x,\ h=2x, we get

2000=x\times x\times 2x

2000=2x^3

Divide both sides by 2.

1000=x^3

Taking cube root on both sides.

\sqrt[3]{1000}=x

10=x

Now, the height of the container is:

h=2x

h=2(10)

h=20

Therefore, the height of the container is 20 cm.

8 0
3 years ago
Write down<br> 1<br> 16<br> as<br><br> (a) a decimal, [1]<br> (b) a percentage.
Ede4ka [16]

Answer:

(a) 1.0625

(b) 6.25% percentage

Step-by-step explanation:

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