6 Questions
Find the 5th triangular number using the formula $X_n = rac{x(n+1)}{2}$
15
Calculate the 10th triangular number using the equation $X_n = rac{x(n+1)}{2}$
55
Determine the 7th triangular number using the formula $X_n = rac{x(n+1)}{2}$
28
Using the formula of a/b= a+b/a, find the ______ for which the ratio is equal to the golden ratio
values
Calculate the ______ using the formula a/b= a+b/a, where a is the larger value and b is the smaller value
golden ratio
Solve the equation a/b= a+b/a to find the ______ that satisfies the golden ratio
values
"Test your knowledge of triangular numbers with these equations! Calculate the 5th, 10th, and 7th triangular numbers using the formula Xn = x(n+1)/
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