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Vanyuwa [196]
2 years ago
11

Which will have the Greater Rate of Change? Growing 14 inches in 2 years or Growing 11 inches in 19 months

Mathematics
1 answer:
Nataly_w [17]2 years ago
7 0

Answer:

growing 11 inches in 19 months

Step-by-step explanation:

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A student has a 2% salt water solution and a 7% salt water solution. To best imitate salt water at a local beach, he needs 1 lit
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Let

x-------> the amount of 2\% solution

y--------> the amount of 7\% solution

we know that

2\%=0.02\\7\%=0.07\\3.5\%=0.035

so

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y=1-x -------> equation A

0.02x+0.07y=0.035 -------> equation B

substitute equation A in equation B

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0.05x=0.035

x=0.7\ liters

find the value of y

y=1-x

y=1-0.7=0.3\ liters

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A) The percent values were written incorrectly in the equation

B) The amount of 7% solution should be written as 1 – x, not x – 1.

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