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Shtirlitz [24]
3 years ago
8

Can someone please help

Mathematics
1 answer:
Sergio [31]3 years ago
8 0

Answer:

16.989

Step-by-step explanation:

Cosine angle = adjacent/ hypnosis

Cos 28 = 15/x  Multiply both sides by x

xCos 28 = 15x/x   x/x is 1

xCos 28 = 15(1)  Divide both sides by Cos 28

xCos 28/Cos 28 = 15 / Cos 28   Cos 28 / Cos 28 = 1

x = 15/Cos 28

x = 16.989

 

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URGENT PLEASE HELP WILL GIVE BRAINLIEST
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3 years ago
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sergiy2304 [10]
Let's solve this problem step-by-step.

STEP-BY-STEP EXPLANATION:

Let's first establish that the origin is always ( 0, 0 ).

Next, as shown in the diagram attached, we can establish that there is a right-angle triangle formed when we connect the different points given from the problem. We can use this to solve the problem.

As the shape is a right-angle triangle, we can use Pythagoras' Theorem which is as follows:

a^2 + b^2 = c^2

Where c = hypotenuse of the right-angle triangle

Where a and b = other two sides of the right-angle triangle which aren't the hypotenuse

From this, we will substitute the values from the problem into Pythagoras' Theorem.

a^2 + b^2 = c^2

a = 12

b = 5

c = distance from the origin = d

THEREFORE:

( 12 )^2 + ( 5 )^2 = d^2

d^2 = 12^2 + 5^2

d^2 = 144 + 25

d^2 = 169

d = square root of ( 169 )

d = 13

FINAL ANSWER:

Therefore, the point ( 12, 5 ) is 13 units from the origin.

Hope this helps! :)
Have a lovely day! <3

3 0
3 years ago
8. When is a/b equal to an integer?
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How many positive integers between 1000 and 9999 inclusive a) are divisible by 9? b) are even? c) have distinct digits? d) are n
oee [108]

I'm not sure about this question. There is so many positive integers and try to search it on Google. That might be a lot of integers to count.

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3 years ago
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