If the legs are legnth x, then the hyptonuse is x√2
x√2=7
divide both sides by √2
x=7/√2
times (√2)/(√2)
(7√2)/2
3.5√2
aprox 4.94974
round
4.95
26 would 130% of 26%.
20 would be 100% of itself leading us to X being 130%.
That brings us to two equations of 20=100% and x=130%
20/x=100%/130%
20/x=100/130
(20/x)*x=(100/130)*x
20=0.769230769231*x
26/0.769230769231=x
26=x therefor x=26
k = n(n^2 +9n+1)
expand brackets
k = n^3 + 9n^2 + n
first subsitute 1 as n to see if the result is prime.
k = (1)^3 + 9(1)^2 + 1
k = 1 + 9 + 1
k = 11 (this number is prime)
then substitute 2
k = (2)^3 + 9 (2)^2 + 2
k = 8 + 9 (4) + 2
k = 36 + 10
k = 46 (THIS NUMBER IS NOT PRIME SO MO IS WRONG)