Assume that all the given functions have continuous second-order partial derivatives. If z = f(x, y), where x = r2 + s2 and y = 4rs, find ∂2z/(∂r ∂s). (Compare with this example.) ∂2z ∂r ∂s = ∂2z ∂x2 + ∂2z ∂y2 + ∂2z ∂x ∂y + ∂z ∂y

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

b

step-by-step explanation:

wait nvm i know the correct answer now its 100%   81 square feet

~batmans wife dun dun