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Lorico [155]
3 years ago
5

What are rational numbers?

Mathematics
2 answers:
Goryan [66]3 years ago
7 0

<u>Answer:</u> The numbers which can be expressed as a ratio of two integers where the  denominator is not equal to zero

<u>Step-by-step explanation:</u>

Rational numbers are expressed in the form of \frac{p}{q} where q\neq 0. 'q' is the denominator in the above fraction.

The fractional form which is terminating or non-terminating recurring are considered as rational numbers.

The numbers 'p' and 'q' are the integers.

Integers are defined as number which is a proper number and not a fraction or decimal. All negative whole numbers are considered as integers.

<u>Some Examples of Rational numbers:</u>  \frac{5}{10} is a terminating fraction. \frac{2}{3} is a non-terminating recurring fraction

Hence, the numbers which can be expressed as a ratio of two integers where the  denominator is not equal to zero

zvonat [6]3 years ago
5 0

Answer:

I'm not 100% sure, but I think it's 3

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3 years ago
The age of some lecturers are 42,54,50,54,50,42,46,46,48 and 48 calculate the mean age and standard deviation
rjkz [21]

Answer:

Mean age: 48

Standard deviation: 4

Step-by-step explanation:

a) Mean

The formula for Mean = Sum of terms/ Number of terms

Number of terms

= 42 + 54 + 50 + 54 + 50 + 42 + 46 + 46 + 48+ 48/ 10

= 480/10

= 48

The mean age is 48

b) Standard deviation

The formula for Standard deviation =

√(x - Mean)²/n

Where n = number of terms

Standard deviation =

√[(42 - 48)² + (54 - 48)² + (50 - 48)² +(54 - 48)² + (50 - 48)² +(42 - 48)² + (46 - 48)² + (46 - 48)² + (48 - 48)² + (48 - 48)² / 10]

= √-6² + 6² + 2² + 6² + 2² + -6² + -2² + -2² + 0² + 0²/10

=√36 + 36 + 4 + 36 + 4 + 36 + 4 + 4 + 0 + 0/ 10

=√160/10

= √16

= 4

The standard deviation of the ages is 4

3 0
3 years ago
Evaluate 5y+x2÷2 when x=4 and y=−3. When x=4 and y=−3, 5y+x2÷2=
Alex Ar [27]
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6 0
3 years ago
Solve the equation.<br> -3x +.1 + 10x = x + 4<br> N<br> olu<br> R<br> X =<br> 18
zheka24 [161]

Answer:

Hence after solving the given equation we get <em>x = 13/20.</em>

Step-by-step explanation:

<em>Given:</em>

<em>-3 x + 0.1 + 10 x = x + 4</em>

<em>-3 x + 10 x - x = 4 - 0.1</em>

<em>6 x = 3.9</em>

<em> x = \frac{3.9}{6}</em>

<em>x = \frac{1.3}{2}</em>

<em>x = \frac{13}{20}</em>

6 0
3 years ago
Simply the expression below . <br><br><br> 8+ ( 15 - 3 ) + 4 <br><br><br> help please .
Alona [7]
8 + (15-3) + 4
8 + 12 + 4
20 + 4
24
your answer is 24
7 0
3 years ago
Read 2 more answers
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