CPhill

26,525,285,981,219,105,863,630,848,000,000  [about 26.525 nontillion ]

I'm not great at Physics, but I think we can use this equation to solve this:

[v_f ]²  = [v_i]²  + 2ad       where v_f is the final velocity, v_i is the intal velocity, a is the acceleration and d is the displacement of the object.......so we have

[v_f]²  =  (9.6m's)² + 2(4.2m/s²)(450m)

[v_f]² = 3872.16m²/s²     taking the square root of both sides we have

v_f = about 62.23 m/s

i think you have:

3256-[5]x5.33    if so, we have

3256 - 26.65 =

3229.35

Maybe someone here knows better than me, but I don't believe our calculator will do this.....here's one that will :

http://www.calculatorsoup.com/calculators/statistics/statistics.php

-1/6 - (-3/5)   get a common denominator (30)

-5/30 - (-18/30)  =

-5/30 + 18/30  =

13/30

On the onsite calculator....just use the divide key

Sure....... a radical containing a real number is just an irrational quantity.....and we can have negative irrationals....

1/15 + 5/?=9/10    subtract 1/15 from both sides

5/?  = 9/10 - 1/15          get a common denominator on the right (30)

5/?   = 27/30  - 2/30

5/?  = 25/30

5/?  = 5/6       so  ?   = 6

-2/3  - 4/2 =

-2/3 - 2 =

-[2 + 2/3 ] =

- 8/3

7/8 x 2/3  [multiply numerators and denominators ] =  14/24 [reduce]  = 7/12