All categories

3 years ago

What is a rational number that is between 9.5 and 9.7?

1 answer:

7 0

A rational number can be written as a fraction so 9.6 is rational

An irrational number cannot be written as a fraction so the decimal is non-repeating and doesn't end. (example: pi π = 3.14159265358.... ) Easiest way to write/express an irrational number is by root.

9.5 < x < 9.7
(9.5)² < x² < (9.7)²
90.2 < x² < 94.09

Find a number inbetween 90.2 and 94.09 and square root it for a non repeating decimal.
Irrational:
x = √(92.17)

You might be interested in

Help i dont know what it is if i get one more wrong i dont pass the level

Semenov [28]

Answer:

blue and green because parallel means two lines that will never cross

3 0

3 years ago

Convert tge following fraction to decimal and then to percent. Round the decimal to three places before converting to percent 9/

katen-ka-za [31]

Answer:

0.9

90%

Step-by-step explanation:

Dividing 10 into 9.0 we get the decimal 0.900.

As a percentage this is 0.900 * 100 = 90%

5 0

3 years ago

Placing numbers in order

blagie [28]

Answer:

Step-by-step explanation:The largest number is 10,080,000 then 1,224,000 the smallest number is 1,215,678

6 0

3 years ago

The postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 we

Dafna11 [192]

Answer:

Here, F = 2.911

F > 2.739502 , so reject null hypothesis ( H0)

There is ample evidence to indicate a disparity in the means for the different forms of mails.

Step-by-step explanation:

Null hypothesis - H₀: μ₁ = μ₂ = μ₃ = μ₄

Alternative hypothesis - H₁: At least one mean is different.

df1 is factor degree of freedom and df2 is error degree of freedom.

Decision rule - Reject H₀ if F > F₀.₀₅, (df1, df2)

F0.05, df1,df2 is f critical value at \alpha = 0.05

Here df1 = 3 , and df2 = 68

Using Excel,

F₀.₀₅, ₃, ₆₈ = FINV( 0.05, 3 , 68 ) = 2.739502302

So reject H0 if F > 2.739502

Here, F = 2.911

F > 2.739502 , so reject null hypothesis ( H0)

There is ample evidence to indicate a disparity in the means for the different forms of mails.

7 0

3 years ago

What is the equation of a circle with its center at (0,-2) and passing through the point (3,-5)

Ksivusya [100]

Circle's Standard Form Equation:
$r^{2} = (x - xo)^{2} + (y - yo)^{2}$

First you need to substitute the C (0,-2) in the equation, where: Xo = 0 and Yo = -2;

$r^{2} = (x - 0)^{2} + (y - ( -2))^{2} \\ r^{2} = x^{2} + (y + 2)^{2}$

Now you substitute the Point (3,-5) values in the last expression, where: X = 3 and Y = -5;

$r^{2} = 3^{2} + (( - 5) + 2)^{2} \\ r ^{2} = 9 + ( - 3)^{2} \\ r^{2} = 9 + 9 \\ {r}^{2} = 18$

Now you get the R^2 value and substitute in the equation that you found putting the C values on it:

$r^{2} = x^{2} + (y + 2)^{2} \\ x^{2} + (y + 2)^{2} = 18$

Here is your standard form equation of the circle.

7 0

3 years ago