Each number is mutliplied by 3 and then numbers 2,3,4,5,... are added successively.
2*3+2=8
8*3+3=27
27*3+4=85
85*3+5=260
260*3+6=786
So it's 786.
Btw, the general formula for this sequence is 
45 45 90 triangle
a = 9√2 / √2
a = 9
answer
a = 9
Answer:
2704
Step-by-step explanation:
52 times 52 equals 2704
Answer:
BC = 26
Step-by-step explanation:
AC=37
BC=5X+6
AB=2X + 3
2x + 3 + 5x + 6 = 37
7x + 9 = 37
7x = 28
x = 4
BC = 5(4) + 6
BC = 26