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Dmitry_Shevchenko [17]
3 years ago
6

Which of the following sets of numbers could be the lengths of the sides of a triangle?

Mathematics
1 answer:
klasskru [66]3 years ago
5 0

Answer:

the answer is C

Step-by-step explanation:

the addition of the lenght of two sides must be greaher than the lenght of the third

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In parallelogram ABCD, what is BDC?
zavuch27 [327]

Answer:

25

Step-by-step explanation:

<ABD=<BDC

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3 years ago
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A 45 foot ladders leaning up against a building. The base of the latter is 20 feet away from the building. What is the angle of
Tatiana [17]

Answer:

The angle of elevation to the top of the building is 63.61 degrees

Step-by-step explanation:

Here, we want to calculate angle of elevation to the top of the building.

For this, we need a triangle

Please check for this in the attachment.

From the diagram, we are to calculate the angle theta.

To do this, we use trigonometric identities.

Looking at what we have, we have the hypotenuse and the adjacent.

So the trigonometric identity to use is the cosine

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Cos theta = 0.444444444444444

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Theta = 63.61 degrees

8 0
3 years ago
What is 9-(30) please help
Murrr4er [49]
21 and download math papa
6 0
3 years ago
DIVIDE WRITE YOUR ANSWER IN SIMPLEST FORM 7/6 DIVIDED BY 2
Nataly [62]

Answer:

7/12

Step-by-step explanation:

  1. when you divide 7/6 by 2, you have to make the 2 into a fraction; which would be 2/1.
  2. you would flip the 2/1 to 1/2, and make the divide sign into a multiplication sign.
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7 0
2 years ago
What does 12A equal?
lozanna [386]
<span><span>4a+6b=10 
4a=10-6b 
a=(10-6b)/4 
a=(5-3b)/2 
</span>
<span>2a-4b=12 
2((5-3b)/2)-4b=12 
(5-3b)-4b=12 
5-7b=12 
-7b=7 
b=-1
</span>
<span>2a-4b=12 
2a-4(-1)=12 
2a+4=12 
2a=8 
a=4 

a=4, b=-1 </span>

12a=48</span>
7 0
3 years ago
Read 2 more answers
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