7? An isosceles triangle has two indentical sides(you can remember that by saying you have TWO eyes hint EYEsosceles) but I’m guessing the bottom is 3 and the two sides are 7?
Answer:
Step-by-step explanation:
Initial Quantity of salt Q(0) = 100 kg
Capacity of tank = 1000 L
Inflow of liquid = 10 l /minute and outflow = same rate thus leaving the content of volume 1000 L at any time
Assume after entering constantly mixes and drains out.
Concentration flow = inflow - outflow
= 0.05(10) - 
i.e.
, Q(0) = 100

Use Q(0) = 5
-45 = A
So the equation would be

a) Initial concentratin = 
b) Use the solution fo rDE substitute t =1
Q(1) = 50-45e^(-0.01) = 5.4477 kg
c) As t becomes large Q = 50
So concentration limit = 50/1000 = 0.05
The answer is c, since the square root of 81 is positive or negative 9.
Hope this helps
Answer:
c, $28
Step-by-step explanation:
30% of 60 is 42
subtract ten and get 32
subtract four and get 28
Answer:The vertex form is -y=a(x-h)2+k
Step-by-step explanation: