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USPshnik [31]
3 years ago
8

Mrs. Sawyer estimates that a quiz will take students no fewer than 11 minutes but no more than 41 minutes to complete. She allot

s 1 minute for passing out the papers and instructions and then students will complete a 20-question quiz. Which compound inequality represents x, the average amount of time a student spends on each question?
Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
7 0
11 ≤ 1 + 20x ≤ 41
11 is less than or equal to 1+20x is less than or equal to 41
nikklg [1K]3 years ago
3 0

Answer:

The inequality is given as:

11 ≤ 1+20 x ≤41

Step-by-step explanation:

Let 'x' represents the average amount of time a student spends on each question.

Now we are given that:

Mrs. Sawyer estimates that a quiz will take students no fewer than 11 minutes that means the total time has to be greater than or equal to 11 minutes.

also we are given that it will take no more than 41 minutes to complete.

i.e. the total time has to be less than or equal to 41 min.

Now She allots 1 minute for passing out the papers and instructions and then students will complete a 20-question quiz.

that means the inequality is given as:

11 ≤ 1+20 x ≤ 41

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Jerry multiplied 3.04 x 7.091 and got the product 2.155664. Is his answer reasonable? Why or why not?
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First we multiply the numbers ignoring the decimal and then place the decimal in the position

3.04 *7.091 = 2155664

Now the first number has two digits after the decimal and the second number has three digits after the decimal.

Therefore in the final result we have to move the decimal (2+3) =5 place from the left,

So the answer would be 21.55664

So, the correct answer is 21.55664

Jerry calculated the answer correctly , but made an error in the placement of the decimal point.  The answer is not reasonable because 2.155664 and 21.55664 mean two completely different answer far apart from each other


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Answer:

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  P(X) = n (A) / n(S)

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