PLEASE HELP ASAP!!!!!!!!

Explain how to distinguish between a rational number and an irrational number.

Andrews [41]

Answer:

An irrational number is a number which cannot be expressed in a ratio of two integers. In rational numbers, both numerator and denominator are whole numbers, where the denominator is not equal to zero. While an irrational number cannot be written in a fraction.S

Step-by-step explanation:

An irrational number is a number which cannot be expressed in a ratio of two integers. In rational numbers, both numerator and denominator are whole numbers, where the denominator is not equal to zero. While an irrational number cannot be written in a fraction.S

4 0

4 years ago

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Helppp me pleaseee due tonight

natulia [17]

3 pounds would cost $6.75

$4.50/2 = $2.25 per pound
$2.25 x 3 = $6.75

8 0

3 years ago

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What is the square root of the number of provisional moons on saturn

My name is Ann [436]

Answer:

7.874

Step-by-step explanation:

The current information at NASA concerning the number of moons in Saturn indicates that Saturn has at least 62 moons.So working with this value, the question requires you to find the square root of 62

This is ;

=√62

=7.874

5 0

4 years ago

Consider a normal population distribution with the value of σ known. (a) what is the confidence level for the interval x ± 2.81σ

sammy [17]

The confidence level would be 99.5%.

When we know the confidence level, we find the z-score by:
Dividing the CL by 100;
Subtracting this result from 1;
Dividing this result by 1;
Subtracting this result by 1.

Algebraically, this looks like:
$1-(\frac{1-(\frac{CL}{100})}{2})$

Using a z-table (http://www.z-table.com), we see that a z-score of 2.81 results in an area under the curve of 0.9975, so we now have
$1-(\frac{1-(\frac{CL}{100})}{2})=0.9975$

To begin solving this, we will subtract 1 from both sides:
$-(\frac{1-(\frac{CL}{100})}{2})=-0.0025
\\
\\(\frac{1-(\frac{CL}{100})}{2})=0.0025$

We will now multiply both sides by 2:
$1-\frac{CL}{100}=0.005$

Subtract 1 from both sides:
$-\frac{CL}{100}=-0.995
\\
\\\frac{CL}{100}=0.995$

Multiply both sides by 100:
CL = 99.5

7 0

3 years ago

17. what is the value of x? 18. what is the value of z? please help me fast!!

den301095 [7]

for x ,

8x + 10x = 180°

[sum of linear pair is equal to 180°]

or, 18x = 180°

or, x = 180/18

therefore, x = 10°……

for z,

10z =8x

[ being corresponding angles are equal ]

or, 10z = 8 × 10°

( replacing x by 10°)

or, 10z = 80°

or, z = 80/10

thus z = 8°…………

5 0

3 years ago