It is 8.525. what u do is 21÷40 and get .525 and then u add the 8 in the front and get 8.525
Make a change of coordinates:


The Jacobian for this transformation is

and has a determinant of

Note that we need to use the Jacobian in the other direction; that is, we've computed

but we need the Jacobian determinant for the reverse transformation (from

to

. To do this, notice that

we need to take the reciprocal of the Jacobian above.
The integral then changes to

Is it 00017?????? Just guessing
1 1/3 /
5/6
=
8/5 or 1 3/5
Answer:
it is 21 because 9+10=19+2=21-10=11+10=21 its magic
Step-by-step explanation: