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3 years ago

How to solve 2/2/7 2/1/7?

Mathematics

1 answer:

Gala2k [10]3 years ago

6 0

Ok so the slashes are division so you would divide

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The probability distribution below shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. The number

Jlenok [28]

Answer:

the mean number of days absent is 0.72 days ( since 0.72 is not an integer, we can say that is the average number of days absent is close to 1 day)

Step-by-step explanation:

given a random variable X= number of days absent , the mean is calculated as:

mean = ∑ x * p(x) , for all the x possible

where x = number of days absent and p(x) the probability of "x" number of days absent

therefore

mean = 0 * 0.60 + 1 * 0.20 + 2*0.12 + 3*0.04 + 4* 0.04 + 5* 0.00 = 0.72 days

7 0

3 years ago

*A bag contains 3 red and 4 blue balls of the same size. Two balls are drawn one after

Alborosie

The first outcome is either red or blue and in the second outcome either blue ball or red ball will be drawn (without replacement) means that the denominator will decrease but in one case blue decreases n red remains . The other case red decreases ( means it is drawn) n blue remains so u will see the fraction above

7 0

4 years ago

Read 2 more answers

2n^2 - 20 n= 5 ?????

hjlf

2n^2-20=0
2n^2=20
n^2=20÷2
n^2=10
n=radical 10

5 0

4 years ago

Read 2 more answers

Write the following sentence using mathematical symbols. The product of 9 and x is less than or equal to -37

Kaylis [27]

Answer:

9x ≤ -37

Step-by-step explanation:

A product of a constant and a variable is indicted by writing the constant next to (typically, in front of) the variable. The symbol ≤ means "is less than or equal to". So ...

(the product of 9 and x) (is less than or equal to) -37

9x ≤ -37

8 0

3 years ago

What is the answer to this math question 2 1/12-5 5/6

AleksandrR [38]

The solution is:

$2\frac{1}{12} - 5\frac{5}{6} = \frac{-15}{4} \text{ or } -3.75$

Solution:

We have to solve the given expression

Given expression is:

$2\frac{1}{12} - 5\frac{5}{6}$

Let us first convert the mixed fraction to improper fraction

Multiply the whole number part by the fraction's denominator.

Add that to the numerator.

Then write the result on top of the denominator.

Thus we get,

$2\frac{1}{12} = \frac{2 \times 12 + 1}{12} = \frac{25}{12}$

$5\frac{5}{6} = \frac{ 5 \times 6 +5}{6} = \frac{35}{6}$

Thus the given expression becomes,

$2\frac{1}{12} - 5\frac{5}{6} = \frac{25}{12} - \frac{35}{6}$

Make the denominators same for easier calculations

$2\frac{1}{12} - 5\frac{5}{6} = \frac{25}{12} - \frac{35 \times 2}{6 \times 2}\\\\2\frac{1}{12} - 5\frac{5}{6} = \frac{25}{12} - \frac{70}{12}\\\\2\frac{1}{12} - 5\frac{5}{6} = \frac{25-70}{12}\\\\2\frac{1}{12} - 5\frac{5}{6} =\frac{-45}{12}$

Reducing to lowest terms, we get

$2\frac{1}{12} - 5\frac{5}{6} = \frac{-15}{4}$

In decimal form, we get

$\rightarrow \frac{-15}{4} = -3.75$

Thus the solution is:

$2\frac{1}{12} - 5\frac{5}{6} = \frac{-15}{4} \text{ or } -3.75$

6 0

4 years ago