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mestny [16]
3 years ago
7

Suppose 12 quarts of pure antifreeze is mixed with 8 quarts of a solution that is 72% antifreeze. Answer the questions below. Do

not do any rounding.
(a) How many quarts of antifreeze are in the resulting mixture? quarts
(b) What percentage of the resulting mixture is antifreeze? %
Mathematics
1 answer:
ra1l [238]3 years ago
4 0
(a)  

12+0.72(8)

12+5.76

17.76 qts of antifreeze

(b)

100(12+8(.72))/(12+8)

100(12+5.76)/20

100(17.76)/20

5(17.76)

88.8%
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Answer:

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Notice that the first two factors are in the form (x-a)(x+a), which is equal to (x^{2} - a^{2}). Start by combining and expanding these two factors:

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Expand this expression using FOIL:

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6 0
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inysia [295]

Answer:

question 1 the answer would be 4/10

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Step-by-step explanation:

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Drawing a Venn diagram would help to answer this and make it  clearer.

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