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Katyanochek1 [597]
3 years ago
8

vOfficials at a major university wanted to know what percent of their students recycle paper. They conducted a random survey and

found these results: Answer All the time Usually Only when it’s convenient Never Probability 0.55 0.25 0.15 0.05 What is the probability that a randomly selected student at this university recycles at least some of the time? answer to two decimal places:
Mathematics
1 answer:
Svetllana [295]3 years ago
6 0

Answer:

The probability is 0.95

Step-by-step explanation:

In this question, we are interested in calculating the probability that a randomly selected student of the university recycles at least some of the times

Mathematically, the probability that student recycles at least some of time = 1 - probability that the student never recycles all the time

From the question, the probability that the student never recycles all the time = 0.05

Substituting this into the equation given above;

Probability that a randomly selected student at the university recycles at least some of the time = 1-0.05 = 0.95

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Jun used 56 cm of ribbon to go around the edge of a rectangular lid. The lid was 13 cm long. What is the width of the lid?
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Answer:

The width of the rectangular lid is 15 cm.

Step-by-step explanation:1. Let's review the information given to us to answer the question correctly:

Length of the ribbon used by Jun = 56 cmLength of the rectangular lid = 13 cm

2. What is the width of the lid? The ribbon used by Jun is equivalent to the perimeter of the rectangular lid, therefore:Perimeter = 2 * Length + 2 * WidthReplacing with the values we have:56 = 2 * 13 + 2 * Width56 = 26 + 2Width2Width = 56 - 262Width = 30Width = 30/2Width = 15

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A function follows the rule y = -75 - 5x. When the function's output is 25, the equation is 25 = -75 - 5x.
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Answer:

x = 20

Step-by-step explanation:

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What happens to the diagonal of a rectangle when the rectangle is reflected across a line of symmetry? What does this suggest ab
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When you reflect a diagonal over a line of symmetry, the diagonal will land perfectly on the other diagonal (and vice versa). This suggests that one diagonal is a mirror copy of the other.

Another way to put it: The vertex points of the rectangle will swap when we reflect over a line of symmetry. A diagonal is simply the opposite vertex points joined together. So this is why the diagonals swap places (because the vertices line up perfectly when you apply the reflection).

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Answer:

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Step-by-step explanation:

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