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3 years ago

7

From a view tower 30 metres above the ground, the angle of depression of an object on the ground is 30 and the angle of elevatio

n of an aircraft vertically above the object is 42.Calculate the height of the aircraft above the ground

1 answer:

kompoz [17]3 years ago

8 0

Answer:

90 I guess so

It might be wrong

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The endpoints of RS are R(–5, 12) and S(4, –6). What are the coordinates of point T, which divides RS into a 4:5 ratio?

Ksivusya [100]

Answer:

Option 2 is correct that is (-1,4)

Step-by-step explanation:

We will use the section formula to find the coordinates of T

Formula is $(x,y)=\frac{m_1x_2+m_2x_1}{m_1+m_2},\frac{m_1y_2+m_2y_1}{m_1+m_2}$

Here, $m_1=4,m_2=5,x_1=-5,y_1=12,x_2=4,y_2=-6$

On substituting the values in the formula we get

$(x,y)=\frac{4\cdot 4+5\cdot -5}{4+5},\frac{4\cdot -6+5\cdot 12}{4+5}$

$\Rightarrow (x,y)=\frac{4\cdot 4+5\cdot -5}{4+5},\frac{4\cdot -6+5\cdot 12}{4+5}$

$\Rightarrow (x,y)=\frac{16-25}{9},\frac{-24+60}{9}$

$\Rightarrow (x,y)=\frac{-9}{9},\frac{36}{9}$

$\Rightarrow (x,y)=(-1,4)$

Therefore, option 2 is correct that is (-1,4)

4 0

3 years ago

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7,707 ÷ 24<br> what does this Equal and what is the remainder?

DochEvi [55]

Answer:

321 R 3

Step-by-step explanation:

the quotient is 321 with a remainder of 3

you can check your work by doing 321 * 24 + 3 = 7,707

6 0

3 years ago

Read 2 more answers

I need some help please

dimulka [17.4K]

I think the answer is the third one, but idk.

4 0

4 years ago

Write a ratio to compare 54 feet to 84 feet

mash [69]

54:84___(÷2)
27:42___(÷3)
9:14

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4 years ago

The grocery store sells kumquats for $4.75 a pound and Asian pears for $3.75 a pound. Write an equation in standard form for the

maks197457 [2]

<span>to find the solution to this problem, we must understand that the sum of the amount that the customer could be bought is $12. $4.75 pound of kumquats and Asian pears for $3.75 mean mathematically as $12. $4.75 kumquats + $3.75 Asian, this last sum is equal to $12, so the true answer is the choice B: 4.75k + 3.75p = 12 Hope this helps. Let me know if you need additional help!</span>

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3 years ago