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2 years ago

12

The school is using a bus to go on a field trip. The bus has 40 seats that each fit 2 people. How many busses would be needed to

transport 560 students?

2 answers:

Liula [17]2 years ago

6 0

Answer: They need 7 buses

Step-by-step explanation:

40 x 2 =80 560 divided by 80 =7

Kamila [148]2 years ago

5 0

Answer: 7 buses

Step-by-step explanation:

hope this helps!

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The National Center for Health Statistics (NCHS) reports that 70%70% of U.S. adults aged 6565 and over have ever received a pneu

Marianna [84]

Answer:

11.44% probability that exactly 12 members of the sample received a pneumococcal vaccination.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they received a pneumococcal vaccination, or they did not. The probability of an adult receiving a pneumococcal vaccination is independent of other adults. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

70% of U.S. adults aged 65 and over have ever received a pneumococcal vaccination.

This means that $p = 0.7$

20 adults

This means that $n = 20$

Determine the probability that exactly 12 members of the sample received a pneumococcal vaccination.

This is P(X = 12).

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 12) = C_{20,12}.(0.7)^{12}.(0.3)^{8} = 0.1144$

11.44% probability that exactly 12 members of the sample received a pneumococcal vaccination.

3 0

3 years ago

A bookseller bought 20 pencils at Rs 4.50 each and sold them at Rs 5.75 each. What i total profit?

WITCHER [35]

<h3>Answer: Rs 25</h3>

Explanation:

Each pencil has a profit of Rs 1.25 since $\text{revenue} - \text{cost} = 5.75 - 4.50 = 1.25$

Multiply that result with 20 to get the final answer shown above in bold.

7 0

1 year ago

PLEASE ANSWER AS SOON AS POSSIBLE

Valentin [98]

7 because it is whole number

6 0

2 years ago

Read 2 more answers

On a map of South Asia, Nepal looks approximately like a rectangle

Hoochie [10]

Answer:

VK for up ureueusidifdisodaaiwiwu

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3 years ago

High Construction Company distributed 8% of its total profit, an amount equal to $5500 in

makvit [3.9K]

Given :

High Construction Company distributed 8% of its total profit, an amount equal to $5500 in bonus this year.

To Find :

The total profit .

Solution :

Let , total profit be x .

It is given that 8 % of the total profit is equal to $5500 .

So ,

$\dfrac{8x}{100}=5500\\\\x=\dfrac{5500\times 100}{8}\\\\x=\$\ 68750$

Therefore , total profit is $68750 .

Hence , this is the required solution .

4 0

3 years ago