How do you solve 0.8 divided by 30 i have to solve it on paper writing it out and i keep getting it wrong and different answers then when i check my answers on a calculator i keep getting a bunch of random numbers i don't understand, you!

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Find the smallest number by which the given number should be divided to make a perfect cube(with steps or the answer will get reported) a.108 b.2187

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°