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goldenfox [79]
2 years ago
8

11/15 - 1/4 = ???? no links please!

Mathematics
2 answers:
valkas [14]2 years ago
8 0

Answer:0.483

Step-by-step explanation:

Karolina [17]2 years ago
7 0
1.95 is the answer or you could say 39/20
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A stop sign is a regular octagon. The standard stop sign has a 16.2 inch radius. The area of a standard stop sign is ___________
juin [17]

The area of standard stop sign regular octagon is 742.3 squared inches, if the standard stop sign has a 16.2 inch radius.

Step-by-step explanation:

The given is,

               Radius of standard stop sign is 16.2 inch radius

Step:1

              The regular octagon is equal to the 16 right angled triangle,

                    Angle of right angle triangle  = \frac{360}{16} = 22.5°

              Ref attachment,

              From the OAB right angle triangle,  

              Trigonometric ratio,

                                 sin ∅ = \frac{Opp}{Hyp}        

              Where, ∅ = 22.5°

                           Hyp = Radius = 16.2 inches

              Ratio becomes,

                           sin 22.5°= \frac{b}{16.2}

                                       b = (0.374607)(16.2)

                                       b = 6.19947 inches

             Trigonometric ratio,

                                 cos ∅ = \frac{Adj}{Hyp}        

              Where, ∅ = 22.5°

                           Hyp = Radius = 16.2 inches

                            Adj = h

              Ratio becomes,

                           cos 22.5°= \frac{h}{16.2}

                                       h = (0.9238795)(16.2)

                                       h = 14.967 inches

Step:2

           From the triangle OAC,

                             Area, A = \frac{1}{2} (Height )( Base)

          Where, Height = 14.967 inches

                       Base = b + x = 6.19947 + 6.19947

                                             = 12.3989 inches

           From the values equation becomes,

                                       A = \frac{1}{2} (14.967)(12.39894)

                                       A = 92.7875 Squared inches

Step:3

           The octagon is equal to sum of 8 triangles

            Area of octagon = 8 × Area of triangle

                                        = 8 × 92.7875

                                        = 742.3 squared inches

Result:

        The area of standard stop sign regular octagon is 742.3 squared inches, if the standard stop sign has a 16.2 inch radius.

 

                               

7 0
3 years ago
Is 23 + 64 positive or negative?​
Natasha2012 [34]

Answer:

positive, it doesnt have a negative sign duh!

Step-by-step explanation:

3 0
2 years ago
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Answer:

The answer is D

Step-by-step explanation:

1 - 3 < x < 4 - 3 \\  - 2 < x < 1

8 0
2 years ago
To the Nearest ten-thousand, I round to 80,000. I round to 81,000 when rounded to the nearest thousand, and to 81, 220. I am a p
Amiraneli [1.4K]
Either 2,666 or 2,722
Hope this helped :)
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2 years ago
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Subtract.<br><br> 14x-(6+7x)<br><br> (Simplify answer)
notsponge [240]
14x-(6+7x)
=14x-6-7x
=14x-7x-6
=(14x-7x)-6
=7x-6x
7 0
2 years ago
Read 2 more answers
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