Please help quickly if possible
2 answers:
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Answer:
289 in^2
Step-by-step explanation:
1. Find side of the small square: (DG=a)
64= a^2
a= 8
2. Find hypotenuse of triangle being formed: (OG=c and DO=b)
+
=
+
=
c= 17
3. Find area of square:
= A
(17)*(17)= 289 in^2
Let be the number of liters of the 10% solution to be used, and
the number of liters of the 4% solution. The chemist wants to end up with a 4 liter solution, so
For each liter used in the mixture, a concentration of either 10% or 4% acid will be contributed, and the goal is to make a 4L solution whose concentration is 7%, which means
Solving for gives
, so 2L of both solutions is needed.