Suppose a change of coordinates t: r2→r2 from the uv-plane to the xy-plane is given byx=−4v−3u−1, y=3−4u−5v.(a) find the absolute value of the determinant of the jacobian for this change of coordinates.∣∣∣∂(x, y)∂(u, v)∣∣∣=∣∣∣det⎡⎣⎢⎢⎤⎦⎥⎥∣∣∣= (b) if a region d∗ in the uv-plane has area 7.25, find the area of the region t(d∗) in the xy-plane.

answer: the dogs need to shift their focus to human scent.

its because the dogs being trained are for search and rescue thus they need to be able to track humans and their specific scent

yes

yes yes yes

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: