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Gekata [30.6K]
4 years ago
10

a boy is standing 180 metres from the base of a tree. the angle of elevation to the top of the tree is 40°. what is the height o

f the tree?​
Mathematics
1 answer:
UNO [17]4 years ago
4 0

Answer:

151

Step-by-step explanation:

tan 40° = x/180

tan 40°*180 = x

0.8391*180 = 151

height = 151m

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Find the area of a regular octagon with
vodka [1.7K]

Answer:

Step-by-step explanation:

Area=2(1+\sqrt{2})8²

       =309.0(round to nearest tenth)

5 0
3 years ago
Sara says, "If you subtract 15 from my number and multiply the difference by -5, the result is -105.” What is Sara’s number?
Semmy [17]

Answer:

-30

Step-by-step explanation:

let Sarah's number be X

x-15=15x

15x*-5=105

-75x=105

-x=105-75

X=-30

I think

hope it's helpful!

3 0
3 years ago
Somebody please help me ive been trying for hours
elixir [45]

Answer:

width = 5k^2

length( 3k^2 +7k +4)

Step-by-step explanation:

15k^4 +35k^3 +20k^2

The width is the greatest common factor

We can factor 5k^2 out

5k^2( 3k^2 +7k +4)

The length is what is inside the parentheses

4 0
4 years ago
What is the value of X?<br> 14<br> //<br> 3<br> 21
julia-pushkina [17]

Answer:

2

Step-by-step explanation:

3/21=x/14

X=2

Answer is 2

5 0
3 years ago
Martin’s neighbors pat him $8 per week to walk their dog. He saves his money for 5 weeks. Martin buys a new bike helmet for $37.
Delicious77 [7]
$8x5=$40
$(40-37)=$3

Martin will have $3 left.
4 0
3 years ago
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