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Lelechka [254]
3 years ago
10

I need help please help me i’m freaking out and I really need this

Mathematics
2 answers:
pychu [463]3 years ago
8 0

Answer:

the answer is a

Step-by-step explanation:

Dima020 [189]3 years ago
7 0

Answer: oof

Step-by-step explanation:

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Susan and Mark are standing at different places on a beach and watching a bird. The angles of elevation they make are 20º and 50
Mandarinka [93]

Answer:

The bird is 2.44km high

Step-by-step explanation:

Hello,

To solve this question, we need to understand how they are and we can only get this with a correct pictorial diagram.

See attached document for better understanding.

From the first diagram, we understand that the bird is between them and also on top of them.

Assuming Susan, Mark and the bird all form a triangle at each other and the bird at the top, we can divide the the triangle into two equal parts.

But before then, we should know that sum of angles in a triangle is equal to 180°

Therefore,

20° + 50° + b° = 180

70° + b = 180

b = 180° - 70°

b = 110°

Dividing angle b into two equal parts = 55° on each side.

See the last attached document for better illustration.

Using SOHCAHTOA, we can find the adjacent of the triangle which corresponds to the height of the bird.

We have opposite = 3.4km and we're looking for adjacent. We can use tangent of the angle to find the adjacent.

Tanθ = opposite / adjacent

Tan 55° = 3.5 / adj

Adjacent = 3.5 / tan55

Adjacent = 3.5 / 1.43

Adjacent = 2.44km

The height of the bird is 2.44km

7 0
3 years ago
Work out 25% of £18
konstantin123 [22]
It’s £4.5

Convert 25 to a decimal so 0.25

0.25 x 18 = 4.5
8 0
3 years ago
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Ngl i forgot whats 23+41
hoa [83]
64 is the answer and apparently it needs to be longer than 20 characters
3 0
3 years ago
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What is the answer to this
Maurinko [17]

{x}^{2}  - 9x - 36 = 0 \\ (x - 12)(x + 3) = 0 \\ x - 12 = 0 \\ x = 12 \\ x  + 3 = 0 \\ x =  - 3
5 0
3 years ago
Read 2 more answers
I NEED THIS ASAP!!! What is GC?
umka21 [38]

9514 1404 393

Answer:

  D.  14

Step-by-step explanation:

Point G divides each median into parts that have the ratio ...

  short : long = 1 : 2

Then ...

  GD : GC = 1 : 2 = 7 : 14 . . . . . . . . multiply the ratio by 7

GC = 14

6 0
3 years ago
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