Answer: a, b, and finally d
Step-by-step explanation:
is conservative if we can find a scalar function
such that
. This is equivalent to solving the system of PDEs,


Integrate both sides of the first PDF with respect to
:

where
is some function independent of
. Then differentiatng with respect to
, we have


and so
is indeed conservative, with

The trick is to divide the numeral by the out of number and Multiply it by 100 ie 6/28 multiplied by 100 = 21,43%
Answer:
one pound per dinosaur
Step-by-step explanation: