Acylindrical tank with a cross-sectional area of 100cm^2 is filled to a depth of 100 cm with water. at t=0, a drain in the bottom of the tank with an area of 10cm^2 is opened allowing water to flow out of the tank. the depth of water in the tank at time t\geq 0 is (t)=(10-2.2t)^2 . (5 pts.)
(a) check that d (0)=100, as specified.
(b) what is an appropriate domain for d?
(c) at what time is the tank first empty?

answer: 1, 3 and 5 are correct

step-by-step explanation:

4444444444444 i think

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584