The cost of a plumbing repair is given by the equation y=45x+30, where x is the number of hours the repair takes and y is the to
1 answer:
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Ans: The average rate of change of function = 
(in fraction)
Explanation:
The average rate of change of function =
Where
b = 8 (x's upper bound)
a = 0 (x's lower bound)
Hence the average rate of change of function = (in fraction)
Explanation:
The average rate of change of function =
Where
b = 8 (x's upper bound)
a = 0 (x's lower bound)
Hence the average rate of change of function =
Answer:
4 liters of 5% and 16 liters of 17.5%
Step-by-step explanation:
Let quantity of 5% be x liters and of 17.5% be y liters
x+y=20 hence y=20-x
Introducing percentages
0.05x+0.175(20-x)=0.15*20
0.05x+3.5-0.175x=3
-0.125x=-0.5
Therefore, y=20-x=20-4=16
You need 4 liters of 5% and 16 liters of 17.5% to achieve 20 liters of 15% acid solution