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3 years ago

Sean answered 18 of 20 quiz questions correctly. What percent of the quiz questions did Sean answer correctly?

2 answers:

ozzi3 years ago

8 0

The answer is 90%. You get this answer by multiplying both the numerator and denominator by 5 so 18x5=90 and 20x5=100 giving you a fraction of 90/100 and a percentage of 90%.

ipn [44]3 years ago

4 0

Answer:

Sean answered 90% of the questions in the quiz correctly.

Step-by-step explanation:

Sean answered 18 of 20 quiz questions correctly.

So, to know the percentage we can do the following calculation.

$\frac{18}{20}\times100= 90$ %

Therefore, Sean answered 90% of the questions in the quiz correctly.

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3 years ago

Suppose that salaries for recent graduates of one university have a mean of $25,700 with a standard deviation of $1350. Using Ch

sergeinik [125]

Answer:

75% of the data will reside in the range 23000 to 28400.

Step-by-step explanation :

To find the range of values :

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$1 - \frac{1}{k^2} =\frac{75}{100}$

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3 years ago

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Answer:

Kim will need to spend 67 minutes on her sixth ride

Step-by-step explanation:

Represent the number of minutes of her sixth ride by m.

Then the average number of minutes is

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Multiplying both sides of this equation by 6 yields

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Answer: c

Step-by-step explanation:

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