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sergey [27]
3 years ago
9

Two right anglws are supplementary. true or false​

Mathematics
1 answer:
Finger [1]3 years ago
4 0

Answer:

That is true.

Step-by-step explanation:

A supplementary angle equals 180 degrees and and a right angle is 90, so 90+90=180

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A blimp provides aerial tv views of a soccer game. The camera sights the stadium at a 7 degree angle of depression. The altitude
maria [59]

Given that,

The camera sights the stadium at a 7 degree angle of depression.

The altitude of the blimp i slide 300 m.

To find,

The line of sight distance from the camera to the stadium.

Solution,

If we consider a right angled triangle. Let x is its hypotenuse i.e. the line of sight distance from the camera to the stadium. Using trigonometry :

\sin\theta=\dfrac{P}{x}\\\\x=\dfrac{P}{\sin\theta}\\\\=\dfrac{300}{\sin7}\\\\=2461.65\ m

So, the line of sight is at a distance of 2461.65 m from the camera to the stadium.

6 0
3 years ago
Which expression has the same value as -5, + (-4)?
marissa [1.9K]
First row, the answer on the left , -5 3/4 - 4 2/3
3 0
3 years ago
Let f(r) = 6,<br> find f-¹(r)
I am Lyosha [343]

There is no answer because there cannot be one to one function inverse.

8 0
1 year ago
A rectangular lawn measures 80 ft by 120 ft. Part of the lawn is torn up to install a sidewalk of uniform width around it. The a
IRISSAK [1]

Answer:

Both answers will give an area of 2400 ft2

but with x=60 we have lawn dimensions -60 ft by -40 ft so this is out

 

x = 10 ft width for the sidewalk

 

Check:  New lawn dimensions

(80-2x)(60-2x) = 60(40) = 2400 ft^2

Step-by-step explanation:

Draw a diagram:

We have a rectangle inside a rectangle.

 

The larger outside rectangle is the original lawn:  80ft by 60 ft with area 4800 ft2

 

The smaller inside rectangle is (80-2x)by(60-2x) where x is width of the new sidewalk.

 

Area of new lawn is 2400 ft^2

 

(80-2x)(60-2x) = 2400

4800 - 160x - 120x + 4x2 = 2400

4x2 - 280x + 2400 = 0

Factor out a 4

x2 - 70x + 600 = 0

(x-60)(x-10) = 0

 

x = 60 ft or x = 10 ft

7 0
3 years ago
Read 2 more answers
Can somebody please help me ?
lakkis [162]

SSA

Step-by-step explanation:

put name of triangle abc are same

4 0
2 years ago
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