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DedPeter [7]
3 years ago
7

Please help me. In order to find the height of the tower shown, the surveyors measure the angles of elevation from two points, A

and B.
a) Calculate the distance BC, to a suitable level or accuracy, explain your answer.
b) Use your answer to calculate the height of the tower CD. *
​

Mathematics
1 answer:
Llana [10]3 years ago
7 0
Good luck to you! This problem was a mental workout. XD

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A sound wave travels through iron at a rate of 5120\,\dfrac{\text{m}}{\text{s}}5120 s m ​ 5120, start fraction, start text, m, e
klio [65]

Answer:

18432 km/h

Step-by-step explanation:

It is given that a sound wave travels through iron at a rate of 5120 m/s.

We know that

1 km = 1000 m

1 hour = 60 minutes

1 minutes = 60 second

Using these conversions we get

1 m = 0.001 km

1 hour  = 3600 second

5120\text{ m/s }=5120\times 0.001\times 3600\text{ km/h}

5120\text{ m/s }=18432\text{ km/h}

Therefore, the sound wave travels through iron at a rate of 18432 km/h.

6 0
3 years ago
What multiples to -64 and adds to -12
tiny-mole [99]

Answer:

Sum :-    -76   Product :-    768

Step-by-step explanation:

4 0
2 years ago
A cereal box has a rectangular base with a length of 8 in. and width of 3 in. The total
krek1111 [17]

Answer: 16.5

Step-by-step explanation: First do 8 times 3 then divide by 264=16.5. I think this is the answer

3 0
3 years ago
What is the greatest common factor of 24, 40 and 32? <br> A. 1 <br> B. 2 <br> C. 4 <br> D. 8
trasher [3.6K]
It’s 8 because 24/8 is 3 and 40/8 is 5 and 32/8 is 4 so the answer is 8 YOUR WELCOME
6 0
3 years ago
Read 2 more answers
For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.
Trava [24]
11 = 1.375 * 8
22 = 1.375 * 16
33 = 1.375 * 24
Therefore y varies directly with x.
Answer: C ) yes; y = 1.375 x 
7 0
3 years ago
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