Answer:

Step-by-step explanation:
We are given that
Volume of water in fish pond,V=3000 L
Mass of toxic chemical=5 kg
Rate=200L/min
Removes chemical=50%
We have to find the differential equation for the time.
Let mass of toxic at any time t= m kg
Rate=Rate in-Rate out



Answer:
no
Step-by-step explanation:
The sum of angles in a triangle must be 180°. The given angles have a greater sum, so cannot be used to make a triangle.
Answer:
3 unit
Step-by-step explanation:
plsss give me brainliest plzzzzzz
1) it costs

so is D
2) the amount of the discount is -30%

so is A
3) -0.3

so is B
4) Chad paid 0.7

so is C