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forsale [732]
3 years ago
10

In a survey, it was found that 4 out of 10 students have a pair of sunglasses. How many students would you expect to have a pair

of glasses out of a group of 45 students
Mathematics
1 answer:
german3 years ago
7 0

Answer:

18

Step-by-step explanation:

4 out of 10 is 4/10 = 0.4

0.4 of 45 = 0.4 * 45 = 18

Answer: 18

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(4⁰  =  1  too small)

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7 0
3 years ago
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For an outdoor concert by the city orchestra, concert organizers estimate that 10,000 people will attend if it's not raining. If
Vlada [557]

Answer:

The number of expected people at the concert is 8,500 people

Step-by-step explanation:

In this question, we are asked to determine the expected number of people that will attend a concert if we are given the probabilities that it will rain and it will not rain.

We proceed as follows;

The probability that it will rain is 30% or 0:3

The probability that it will not rain would be 1 -0.3 = 0.7

Now, we proceed to calculate the number of people that will attend by multiplying the probabilities by the expected number of people when it rains and when it does not rain.

Mathematically this is;

Number of expected guests = (probability of not raining * number of expected guests when it does not rain) + (probability of raining * number of expected guests when it rains)

Let’s plug values;

Number of expected guests = (0.3 * 5,000) + (0.7 * 10,000) = 1,500 + 7,000 = 8,500 people

4 0
3 years ago
54,000 families have incomes less than $20,000 per year. This number of families is 60% of the families that had this income lev
tangare [24]
54000/.6= 90000, so answer should be 90,000
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3 years ago
I give brainliest!!!!
Elza [17]

Answer:

(3,2) i hope this answer will help you

7 0
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Answer:

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Step-by-step explanation:

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