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Here is the solution Formula to find diagonals in a polygon: D = (n(n-3)/2) D = number of diagonals that is 20 n = ? 20=(n^2-3n)/2 40=n^2-3n n^2-3n-40= 0 Splitting the middle term, n^2-8n+5n-40=0 n(n-8)+5(n-8)=0 (n-8)(n+5)= 0 So there are two values for n n-8=0 or n+5=0 n = 8 or n = -5 n can't be ne...
Good way of understand this.
Nice way to teach Anurag. I really like your way to explain this problem with the statements and examples.
Understood it clearly with concept.
Formula for Area of a Triangle
First of all its a very nice question and you should refer Dr.R.D.Sharma's book for the best answer of this question because It contains very nice explanation and examples also.
In my opinion the solution provided by Ashujain is good and here is mine First of all, The Time taken by truck to travel a km = 1/40 hrs = 60/40 mins = 1.5 mins Time taken by the boy to travel 1km = 1/3 hrs = 60/3 mins = 20 mins Therefore, the boy will reach the truck in 20 - 1.5 = 18.5 mins This is...
First of all its a very nice question and the solution provided by aneesh.kg is best, This time when I came up with the solution its not the same but the procedure followed was same and correct.
Radius of a Circle
Hi [email protected],
I was in a confusion that I think it will be x>1 but it also solve with x>2, could you bring solution that how's you done it ? I will also recommend x>1 but confused, I am going to check my solution again.
square footage calculator
I just want to give some general information about rhombus and I am giving the definition and properties of quadrilaterals as they are figures with four sides and four angles. There are many different types of quadrilaterals, which are classified by their sides and angles here are some examples-rect...
Very well solved I solved this problem and get same number, it's a typical task and during solving this question my friend aneesh.kg give the answer with well description.
I think solution provided by mdavidm_531 is right as I calculate but here is one funny solution which is also interesting. Let's try to solve it in simple way x is divided by 10 remainder is 7 let it is 7 x is divided by 2 and get 1 as remainder obviously 7 now x is divided by 5 and we get remainder...