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3 years ago

SOMEONE PLEASE HELP ME ASAP PLEASE!!!!

Mathematics

1 answer:

ehidna [41]3 years ago

5 0

Answer:

Therefore,

$a_{21}=2$

Step-by-step explanation:

Given:

$A=\left[\begin{array}{ccc}3&6&9\\2&4&8\\\end{array}\right]$

To Find:

a₂₁ = ?

Solution:

Let,

$A=\left[\begin{array}{ccc}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\\\end{array}\right]$

We require ' a₂₁ ' i.e Second Row First Column Element

So on Comparing we get

∴ $a_{21}=2$

Therefore,

$a_{21}=2$

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A rabbit population doubles every 4 weeks. There are currently five rabbits in a restricted area. If t represents the time, in w

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98 days = (98 ⁄ 7) weeks = 14 weeks

Po = initial population = 5 

Ƭ = doubling time in weeks 

t = elapsed time in weeks 

P{t} = population after "t" weeks 

 P{t} = (Po)•2^(t ⁄ Ƭ) 

 P{t} = (Po)•2^(t ⁄ 4) 

 P{t} = 5•2^(t ⁄ 4) 

 P{14} = (5)•2^(14 ⁄ 4) … t = 14 weeks = 98 days 

 P{14} = 56 … population after 14 weeks

6 0

3 years ago

3 ten thousands 2 thousands *10

Ad libitum [116K]

3 the thousands = 30.000

2 thousands = 2.000

*10 = times ten

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3 years ago

A.What is the slope of the graph? B.Write an equation for the line.

jolli1 [7]

Answer:

Part A) The slope is $m=-\frac{1}{2}$

Part B) The equation of the line is $y=-\frac{1}{2}x-1$

Step-by-step explanation:

Part A) What is the slope of the graph?

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

Looking at the graph it takes any two points

(-2,0) and (0,-1)

substitute the values in the formula

$m=\frac{-1-0}{0+2}$

$m=\frac{-1}{2}$

$m=-\frac{1}{2}$

Part B) Write an equation for the line

we know that

The equation of the line in slope intercept form is

$y=mx+b$

where

m is the slope

b is the y-coordinate of the y-intercept

we have

$m=-\frac{1}{2}$

$b=-1$ ----> the y-intercept is the point (0,-1)

substitute

$y=-\frac{1}{2}x-1$

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3 years ago

Which statements are true about x? Select three options

polet [3.4K]

The true statements about x are:

x ∈ B ∪ C

x ∈ B ∩ C

x ∈ A ∪ C

<h3>Further explanation</h3>

A set is a clearly defined collection of objects.

To declare a set can be done in various ways such as:

With words or the nature of membership

With set notation

By registering its members

With Venn diagrams

Multiplying set A x B is by pairing each member of set A with each member of set B.

Example:

A = {1, 2, 3}

B = {a, b}

Then

A x B = {(1, a), (1, b), (2, a), (2, b), (3, a), (3, b)}

Union of set A and B ( A ∪ B ) is rewriting each member A and combined with each member B.

Intersection of set A and B ( A ∩ B ) is to find the members that are both in Set A and Set B.

Example:

A = {1, 2, 3, 4}

B = {3, 4, 5}

A ∪ B = {1, 2, 3, 4, 5}

A ∩ B = {3, 4}

Let us now tackle the problem!

To solve this problem, it is better to draw the Venn diagram as shown in the picture in the attachment.

Let :

A = { p , q , s , t }

B = { q , r , t , x }

C = { s , t , v , x }

$\texttt{ }$

$B \cup C = \{ r , q , t , v , \boxed{x} \}$ ✔

$B \cap C = \{ t , \boxed{x} \}$ ✔

$A \cup C = \{ p , q , s , t , v , \boxed{x} \}$ ✔

$A \cap C = \{ s , t \}$ ⤬

$A = \{ p , q , s , t \}$ ⤬

$\texttt{ }$

From the results above, it can be concluded that the correct statements are:

x ∈ B ∪ C

x ∈ B ∩ C

x ∈ A ∪ C

$\texttt{ }$

<h3>Learn more</h3>

Mean , Median and Mode : brainly.com/question/2689808
Centers and Variability : brainly.com/question/3792854
Subsets of Set : brainly.com/question/2000547

<h3>Answer details</h3>

Grade: High School

Subject: Mathematics

Chapter: Sets

Keywords: Sets , Venn , Diagram , Intersection , Union , Mean , Median , Mode

5 0

3 years ago

Read 2 more answers

SOMEONE PLEASE HELP ME ASAP PLEASE!!!!​

SOMEONE PLEASE HELP ME ASAP PLEASE!!!!