A tank contains 25 L of water. A solution with a salt concentration of 0.4 kg/L is added at a rate of 5 L/min. The solution is kept mixed and is drained from the tank at a rate of 3 L/min. If y(t)
is the amount of salt (in kilograms) after t minutes, show that y satisfies the differential equation
dy
dt
= 2 −
3y
25 + 2t
.
Solve this equation and find the concentration after 20 minutes. (Round your answer to four decimal places.)

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.

or

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

i can you with this answer

step-by-step explanation: