Mathematics, 06.09.2020 20:01 amorenextdoor
The triangular numbers are the following: T1 = 1, T2 = 3, T3 = 6, T4 = 10, ...
They are called triangular numbers because you can think of the number as a series of dots which can be arranged into a triangle as shown below:
T1 =1
T2 = 3
T3=6
T4=10
The formula for the nth triangular number is Tn = n(n+1)/2. For example, the fourth triangular number is 10, so T4 = 10.
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For example, if 1953 happened to be the 4th triangular number (which of course it's not), your answer would be 4.
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John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11
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The triangular numbers are the following: T1 = 1, T2 = 3, T3 = 6, T4 = 10, ...
They are called tria...
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