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Serggg [28]
3 years ago
9

If you can exchange 104.51 US dollars for 1,322.14 Mexican pesos, what is the exchange rate of the US dollar to the Mexican peso

, to three decimal places?
Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
5 0
Given:
USD: 104.51
Mexican pesos: 1,322.14

1,322.14 / 104.51 = 12.65

1 US Dollar is equal to 12.65 Mexican Pesos

or 

104.51 / 1,322.14 = 0.079

1 Mexican peso is equal to 0.079 US Dollars.

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Step-by-step explanation:

Assuming the maximum score for the final is 100\%, we can multiply each score by its respective course weight and add them together to give a final score. If your friend did receive this maximum score of 100\%, their overall grade for the course would be:

83(1-0.25)+100(0.25)=\fbox{$87.25\%$}.

To find the minimum score they need to earn a 75% for the course, we set up the following equation:

83(1-0.25)+x(0.25)=75, where x is the minimum score she needs.

Solving, we get:

62.25+x(0.25)=75,\\x(0.25)=12.75,\\x=\fbox{$51\%$}.

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