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sdas [7]
2 years ago
6

Gavin's anemometer measures the wind speed at 44.14 kilometers per hour. 4 times faster than the wind speed 5 hours ago.

Mathematics
1 answer:
nekit [7.7K]2 years ago
8 0
x-searched\ speed\\\\4x=44.14\ \ \ \ \ \ |divide\ by\ 4\\\\x=11.035\\\\5\ hours\ ago\ the\ wind\ speed\ was\ 11.035\ kilometers\ per\ hour.
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A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create 30 liters of a 15% hydrogen per
FromTheMoon [43]
Your two equations are at the top, in the box is what each variable represents. Below the box is total liters of the 15%, which is going to equal the total liters for 10% plus the total liters for 25%. Make your percentages into decimals. There’s a total of 30 liters so, x+y needs to equal 30. Isolate a variable, I chose y, you can do either or (isolating x would be more math). Y is going to equal 30-x, substitute that for the Y in the second equation, then you need to distribute 0.25 into 30-x. Then it’s simple math, subtract 7.50 from both sides, add like gets, divide both sides by -0.15, making x=20.

8 0
2 years ago
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Fiesta28 [93]

Answer:

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7 0
3 years ago
I don't quite understand the LCD and the unlike denominators properly. May someone explain it, please.
Whitepunk [10]

Hey!

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LCD stands for Lowest Common Denominator.

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Explanation:

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In this equation the lowest common denominator is 27 because 9 can go in 27 and 27 can go into itself. Se basically 27 is the lowest possibly common denominator both fractions can get to.

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Hope This Helped! Good Luck ;)

5 0
3 years ago
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Simora [160]

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2 years ago
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Answer:

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Step-by-step explanation:

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