Rosalinda's family is taking a road trip. They drove at a rate of 45 miles per hour. If they drove for 5 hours on the first day
1 answer:
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Answer:
Step-by-step explanation:
Let's write out a case for two specific questions being correct and the rest being incorrect:
,
The represents the chances of getting the question correct, as there are 5 answers and 1 correct answer choice.
The represents the chances of getting the question incorrect, as there are 5 answers and 4 incorrect answer choices.
The equation above does show the student getting two answers correct and three answers incorrect, but it only shows one possible case of doing so.
We can choose any two of the five questions to be the ones the student gets correct. Therefore, we need to multiply this equation by the number ways we can choose 2 from 5 (order doesn't matter): .
Therefore, the probability the student gets two questions correct is:
Answer:
2203.20 pesos
Step-by-step explanation:
Joe's original amount was $200
#We convert this amount to $CDN:
Joe now has to convert the Canadian dollars to Mexican pesos(at a rate of 10.8 pesos per $1 CDN):
Hence, he gets a total of 2203.20 pesos in exchange for his Canadian dollars.