In March, Isaiah and Freddie had the same amount of money in their savings accounts. In April, Isaiah deposited $210 into his ac
count. Freddie increased the money in his account by 15%. When they compared their balances, they found that they were still equal.
How much money did they both have in their accounts in March?
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How much money did they both have in their accounts in March?
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2 answers:
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1.
12 liters of 26% acid solution contain
liters of acid.
x liters of 40% acid solution contain
liters of acid.
The third solution is made from the two mixed solution so its volume is
, and the volume of acid in it is 
. Its concentration is 33% or 0.33.
The concentration of a solution is the volume of the solution divide by the volume of acid in it.
The answer is B.
2.
12 liters of 16% acid solution contain
liters of acid.
x liters of 40% acid solution contain liters of acid.
The volume of the third solution is, and the volume of acid in it is 
. Its concentration is 32% or 0.32.
The answer is B.
3.
16 liters of 18% acidsolution contain
liters of acid.
x liters of 27% acid solution contain
liters of acid.
The volume of the third solution is
, and the volume of acid in it is 
. Its concentration is 21% or 0.21.
The answer is A.
12 liters of 26% acid solution contain
x liters of 40% acid solution contain
The third solution is made from the two mixed solution so its volume is
The concentration of a solution is the volume of the solution divide by the volume of acid in it.
The answer is B.
2.
12 liters of 16% acid solution contain
x liters of 40% acid solution contain
The volume of the third solution is
The answer is B.
3.
16 liters of 18% acidsolution contain
x liters of 27% acid solution contain
The volume of the third solution is
The answer is A.
Answer:
[-20.25;+∞).
Step-by-step explanation:
1) according to the properties of the given parabola the minimum is:
2) y₀=-20.25 means, the value -20.25 is minimum of the range, the maximum →+∞;
3) finally, the range y≥-20.25.