Can You Solve This Math That Baffled Australian Students? - Education (2)

Can You Solve This Math That Baffled Australian Students? - Education (2) - Nairaland

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Re: Can You Solve This Math That Baffled Australian Students? by iamrealdeji(m): 10:31am On Nov 04, 2015

Bibidear:
Rubbish,i am sure the richest men in the world cant solve it

Re: Can You Solve This Math That Baffled Australian Students? by Ade5(m): 10:31am On Nov 04, 2015

Mathematicians, please channel some of this energy into this thread, thank you:

https://www.nairaland.com/2699268/solve-interesting-math-puzzle

Re: Can You Solve This Math That Baffled Australian Students? by englishmart(m): 11:03am On Nov 04, 2015

EverestdeBliu:
Total angles in a circle = 360
Number of sides = 12
X = 360 ÷ 12
X = 30
Therefore,angle x is equals 30 degrees.

why,are you people looking for X? It's right there

2 Likes

Re: Can You Solve This Math That Baffled Australian Students? by oddysey(m): 11:30am On Nov 04, 2015

That figure is a dodecagon (polygon with 12 sides)
With n=12, i.e. number of sides, Total angle in a dodecagon = 180 (n-2) = 180 (12-2) = 1800 degrees.
Therefore, each internal angle = 1800/12 = 150 degrees.
The triangle formed is isosceles, i.e. has 2 sides of equal length and the angles opposite those sides also equal.
So, in the triangle formed, you have the 2 angles at the base to be 75 degrees.
Since the angles in a triangle sum up to 180 degrees, X is therefore 180 - 75 -75 = 30 degrees.
I hope I am right.

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Re: Can You Solve This Math That Baffled Australian Students? by Nobody: 11:35am On Nov 04, 2015

Bibidear:
Rubbish,i am sure the richest men in the world cant solve it

Is there an inverse relationship btw being rich and having math skills?

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Re: Can You Solve This Math That Baffled Australian Students? by Investmind: 12:41pm On Nov 04, 2015

Bibidear:
Rubbish,i am sure the richest men in the world cant solve it

Olodo

1 Like

Re: Can You Solve This Math That Baffled Australian Students? by Nobody: 12:42pm On Nov 04, 2015

EverestdeBliu:
Total angles in a circle = 360
Number of sides = 12
X = 360 ÷ 12
X = 30
Therefore,angle x is equals 30 degrees.

You're wrong.

4 Likes

Re: Can You Solve This Math That Baffled Australian Students? by InvertedHammer: 12:43pm On Nov 04, 2015

nawtibownie:
That area forms an equilateral triangle (three equal sides.) Each angle of a triangle is 60°.
X= 60°

/
Critical thinking.
An analyst in the making
The question looks like a Board exam question where they don't expect you to whip out a calculator.
They are looking for applied knowledge.

Question: is x the angle between the coins or is it angle marked on the coin?

/

Re: Can You Solve This Math That Baffled Australian Students? by Nobody: 12:44pm On Nov 04, 2015

We use circle coins in Nigeria grin

Anyway, I think X = 30 degrees

Re: Can You Solve This Math That Baffled Australian Students? by InvertedHammer: 12:44pm On Nov 04, 2015

holocron:
This is JSS geometry.

D) 60deg. Angles in a circle = 360. Since there are 12 chords, angle at the inside of each chord triangle is 30, the sides of the chords 75 each (angle inside triangle = 180). Including the ones on the other coin = 75×4 = 300. So x is 60. (Angle round a circle is 360deg)

/
Scientific thinking.

An engineer in the making.

Question: is x the angle between the coins or the angle marked on the left coin?
/

Re: Can You Solve This Math That Baffled Australian Students? by Kockane(m): 12:44pm On Nov 04, 2015

ChokolateBoss:
60 degrees.
Each angle of a polygon = 180(n - 2)/n
For 12-sided polygon, each angle
= 180 (12 - 2)/12 = 150 deg
X = 360 - (150 + 150) = 60

Bros, I'm afraid you are so wrong!

360 degrees divided by 12 sides equal 30 degrees. what da hell is baffling in this biko?

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Re: Can You Solve This Math That Baffled Australian Students? by telim: 12:45pm On Nov 04, 2015

See Simple maths even my grand mother knows its 60 degree.

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Re: Can You Solve This Math That Baffled Australian Students? by spacyzuma(m): 12:45pm On Nov 04, 2015

It's 60 degrees.

1 Like

Re: Can You Solve This Math That Baffled Australian Students? by j4sure(m): 12:45pm On Nov 04, 2015

its very simple now .Av u all forgotten d Ans. very cheap question. k let me allow una to remember d Answer .

babseg:
What's the answer

Re: Can You Solve This Math That Baffled Australian Students? by tmeg: 12:45pm On Nov 04, 2015

The answer is 30''

1 Like

Re: Can You Solve This Math That Baffled Australian Students? by gurunlocker: 12:46pm On Nov 04, 2015

Nigerians are intelligent o.... solving with different method

Re: Can You Solve This Math That Baffled Australian Students? by Ola64(m): 12:47pm On Nov 04, 2015

EverestdeBliu:
Total angles in a circle = 360
Number of sides = 12
X = 360 ÷ 12
X = 30
Therefore,angle x cis equals 30 degrees.

Correct!!!

2 Likes

Re: Can You Solve This Math That Baffled Australian Students? by RexTramadol1: 12:48pm On Nov 04, 2015

Wuruwuru to the answer says

The answer is 60 deg

Don't ask me how!

Re: Can You Solve This Math That Baffled Australian Students? by Demmocrats(m): 12:48pm On Nov 04, 2015

Kockane:
Bros, I'm afraid you are so wrong!

360 degrees divided by 12 sides equal 30 degrees. what da hell is baffling in this biko?

It seems you didn't study elementary maths the dude is so correct

X = 60degree

Re: Can You Solve This Math That Baffled Australian Students? by spacyzuma(m): 12:48pm On Nov 04, 2015

It's 60 degrees.

Total sum of internal angles in a polygon = (n-2)*180

For a 12-sided polygon, it's (12-2)*180 = 1800

Thus, each internal angle is 1800/12 = 150.

The next part is hard to explain without diagrams, though.

For the 2 adjacent coins, the sum of their internal angles where they meet is 150 + 150 = 300.

At that point, the total angle is 360 degrees (angle around a point, or in a circle)

Thus, the angle X = 360 - 300 = 60 degrees

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Re: Can You Solve This Math That Baffled Australian Students? by saintneo(m): 12:49pm On Nov 04, 2015

Long time I did such maths...but it is cheap.
The angle between both coins is 60°.

The internal angle at each edge of the 12-sided polygon

= ((12-2)*180)/12 = 150°

The angle between both polygons

= 360 - (150*2) = 60°

5 Likes

Re: Can You Solve This Math That Baffled Australian Students? by AllNaijaBlogger(m): 12:49pm On Nov 04, 2015

N-2 (180)

Formula for total angles in shapes.

50 cent had 12 angles.

12 - 2 (180) = 1800

Equal sides in a 12 sided shape means that each angle is 150 i.e 1800 divided by 12

If we draw a line between the two coins, X in the picture will be divided into two.

Each side of a straight line is 180 degrees. X is on both sides of the line. The inside angle (angle in the 12 sided coin) of both sides of the line is 150. So each side for X is 180 minus 150.

Each side of X is 30 degrees. That means that X itself is 60 degrees

6 Likes

Re: Can You Solve This Math That Baffled Australian Students? by Nobody: 12:49pm On Nov 04, 2015

360 divide by 12 is 30"

Re: Can You Solve This Math That Baffled Australian Students? by braine(m): 12:50pm On Nov 04, 2015*

x is 60.. Note that the x is placed outside the coins, so its the angle of the of one of the equilateral triangleS, which inadvertently = 60.

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Re: Can You Solve This Math That Baffled Australian Students? by Penboy: 12:50pm On Nov 04, 2015

Bibidear:
Rubbish,i am sure the richest men in the world cant solve it

Grrr!
After seeing this, i wanted to calm down and compose an epistle of abuses for you; but then, that would also mean "throwing gold to the swine".

I know your type in school.
#BlockHeadedFool.

What the richest men know do you also know them??

Mention the richest men in the world and lets see if their knowledge doesn't surpass this sum.

#I.diotFool
#waiting for marriage so that you can sit your lazy ass in husby house and grow fat!
#MadEdiot
#i'm sure you're a school dropout with a kid from an unwanted pregnancy whom you don't even know the father!

If you dare quote me!!
#GRR

3 Likes