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dimulka [17.4K]
3 years ago
11

A rational and an irrational number between 3.99 and 4

Mathematics
2 answers:
JulijaS [17]3 years ago
7 0

Step-by-step explanation:

Rational = 3.995

Irrational = 3.991991199111991111....

Naddik [55]3 years ago
5 0
The rational numbers would be 3.99 and 4 while there are no irrational number. A rational number is a number that can be written as a fraction for 3.99 it can be written as 399/100 and its the simplest form of the fraction. Also, 4 is a rational number since it can be written as 4/1 which is a fraction.
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Please help. Given formula, just plug it in to find answer.
ahrayia [7]

Step-by-step explanation:

x = 2.5

(2.5 × 0.25 ) + 2= 0.625 +2

= 2.625

3 0
2 years ago
How to multiply 6 and 4/9
Margaret [11]

Answer:

2 and 2/3

Step-by-step explanation:

To multiply fractions, all you have to do is multiply the numerators by the denominators and/or simplify opposite sides.

4/9 * 6 would be 4/9 * 6/1, which equals 4/3 * 2/1. 4*2 is 8 and 3*1 is 3, so the answer would be 8/3, which simplifies to 2 2/3.

6 0
3 years ago
The results of an election are shown in the table below.
vazorg [7]

We are given the results of an election:

Candidate Fraction of votes

Johnson = \frac{1}{9}

Smith  = \frac{7}{18}

Dragovic = \frac{1}{2}

Now, we need to find the difference between the fractions of votes received by Dragovic and Johnson.

Therefore, difference is :

\frac{1}{2} - \frac{1}{9}

Taking common denominator of 2 and 9 is 18.

=\frac{1\times9}{2\times 9} - \frac{1\times 2}{9\times 2}

=\frac{9}{18} - \frac{2}{18}

=\frac{9-2}{18}

=\frac{7}{18}

Therefore, the difference between the fractions of votes received by Dragovic and Johnson is \frac{7}{18}.


4 0
2 years ago
The average full-time faculty member in a college works an average of 53 hours per week. a) If we assume the standard deviation
arsen [322]

Answer:

2.28% of faculty members work more than 58.6 hours a week.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The average full-time faculty member in a college works an average of 53 hours per week. Standard deviation of 2.8 hours.

This means that \mu = 53, \sigma = 2.8

What percentage of faculty members work more than 58.6 hours a week?

The proportion is 1 subtracted by the p-value of Z when X = 58.6. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{58.6 - 53}{2.8}

Z = 2

Z = 2 has a p-value of 0.9772

1 - 0.9772 = 0.0228

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2.28% of faculty members work more than 58.6 hours a week.

6 0
2 years ago
Find the value of x, rounded to the nearest tenth
solmaris [256]

Answer:

x= 8.1

Step-by-step explanation:

The given triangle is a right angle triangle.

We cannot use the Pythagoras theorem as the lengths of all sides are not known. We will use triangular ratios here to solve the given problem.  

As it is clear from the diagram that x is the hypotenuse of the triangle and 11 is the length of the base. We will use a ratio in which base and hypotenuse are used.

So,

cos⁡ θ= base/hypotenuse

cos⁡ 36=x/10

0.8090=x/10

8.090=x

x=8.090

Rounding off to nearest 10

x=8.1

5 0
3 years ago
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