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3 years ago

How to write all real numbers in set notation?

1 answer:

7 0

Hi, this is the notation for inclusion of all real numbers.

$x \in \mathbb{R}$

We can also state numbers which are positive or negative with a sign on top of the R notation like so:

$x \in \mathbb{R}^{+} \text{ or } x \in \mathbb{R}^{-}$

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A square is shown below. Which expression can be used to find the area, in square units, of the shaded triangle in the square?

ELEN [110]

Answer:

Area = $\frac{1}{2} (6)(6)$

Step-by-step explanation:

Area of Triangle = $\frac{1}{2} (Base)(Height)$

Where Base = 6 , Height = 6

Area = $\frac{1}{2} (6)(6)$

Area = 3 * 6

Area = 18 units^2

7 0

3 years ago

Read 2 more answers

N^2+100=20n Please show work

adell [148]

Subtract 20n from both sides of the equation.
n^2+100-20n=0
factor using the perfect square rule.
(n-10)^2=0
set the n-10 equal to 0.
n-10=0
add 10 to both sides of the equation.
n=0

7 0

3 years ago

What is the square route of pi

vagabundo [1.1K]

It is simply would be: √π

= √3.14

= 1.7728

In short, Your Answer would be: 1.7728

Hope this helps!

7 0

3 years ago

Read 2 more answers

A random sample of 1141 men and 1212 women aged 25-64 y (response rate 76%) completed a questionnaire and underwent a short exam

Dennis_Churaev [7]

Answer:

(a) A cross sectional study (b) The parameter can be computed as follows: Non-drinkers who agree exposed to obesity, Drinkers who are exposed or vulnerable to obesity (c) A postie relationship is established from the experiment between drinkers who are exposed to obesity and non drinkers who are exposed to obesity

Step-by-step explanation:

(a) The type of design is refereed to as a cross sectional study

(b) Now, because 50 men are beer drinkers out of 891 men.

Hence we can deduce form this that 500/891 gives us 0.56%.

This suggest that 0.56% men are beer drinkers out of which 325 have obesity, lets take for example 235/500 = 0.65% are exposed to obesity in which 80/ (89-500) = 80/491 = 0.16%

The non drinkers are 0.16% and are not exposed to obesity

Thus,

The parameters to be calculated is stated below:

Non-drinkers who agree exposed to obesity
Drinkers who are exposed or vulnerable to obesity

In this case we can say there is a positive relationship between drinkers and non drinkers, since from the experiment 0.65% are exposed to obesity and 0.16$ non drinkers are exposed to obesity.

8 0

3 years ago

Give the value of the expression from (a) when x=10 (i just need the answer for B)

Masteriza [31]

Answer:

257

General Formulas and Concepts:

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

2x² + 5x + 7

x = 10

Step 2: Evaluate

Substitute: 2(10)² + 5(10) + 7
Exponents: 2(100) + 5(10) + 7
Multiply: 200 + 50 + 7
Add: 250 + 7
Add: 257

5 0

2 years ago