916/8.5 x $3.77 = $406.27
(6 + √2)^2 =
(6 + √2)(6 + √2) =
36 + 12√2 + 2 =
38 + 12√2
4 min + 50 sec = 290 sec
10 min = 600 sec
So
500m / 290sec = ( x ) m / 600 sec cross-multiply
500 * 600 = 290 *x
300,000 = 290 * x divide both sides by 290
about 1034.48 m in 10 min
Vc = (1/3) pi * r^2 * h .....so
423.9 =(1/3)pi * r^2 * 5
423.9 = (5pi/3) * r^2 multiply both sides by ( 3 / [5 pi] )
80.959 = r^2 take the square root of each side
r = about 9 inches
The nth term is given by :
3 (-2)n-1
So....the 12th term is
3(-2)12-1 =
3(-2)11 =
-6144
I can't do any better than this....it's excellent !!!.........http://www.purplemath.com/modules/sqrquad.htm
90 x .25 = 22.5 ft
Like this......https://www.desmos.com/calculator/rumjro4gci
Assuming that any digit can be used in any place and repeats are allowed....
Combos 0000 - 9999 could be used = 10,000 different combinations
This might help.......http://www.physicsclassroom.com/class/sound/Lesson-5/Closed-End-Air-Columns
