8x + 2+ 4y; x = 9, y = 2

Answer:

false contradiction

Step-by-step explanation:

The '⊥' symbol stand for false contradiction. The up tack or falsum ('⊥') is a constant symbol used to represent: The bottom element in lattice theory. ... A logical constant denoting "false" in logic.

Step-by-step explanation:

The symbol shows to be perpendicular since the vertical line is dividing the horizontal in half with an angle of 90 I guess

Answer:

the price per book is $3 the constant of proportionality is 3

Step-by-step explanation:

12 divided by 4 is 3 and 9 divided by 3 is 3 so it means that the price for 1 book is going to be 3 and for every book you buy the original value will be 3.

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf 240 \: {inches}^{2} }}}}[/tex]

Step-by-step explanation:

Given,

Length of a rectangle = 20 inches

Perimeter of a rectangle = 64 inches

Area of a rectangle = ?

Let width of a rectangle be ' w ' .

First, finding the width of a rectangle

[tex] \boxed{ \sf{perimeter = 2(l + w)}}[/tex]

plug the values

⇒[tex] \sf{64 = 2(20 + w)}[/tex]

Distribute 2 through the parentheses

⇒[tex] \sf{64 = 40 + 2w}[/tex]

Swap the sides of the equation

⇒[tex] \sf{40 + 2w = 64}[/tex]

Move 2w to right hand side and change it's sign

⇒[tex] \sf{2w = 64 - 40}[/tex]

Subtract 40 from 64

⇒[tex] \sf{2w = 24}[/tex]

Divide both sides of the equation by 2

⇒[tex] \sf{ \frac{2w}{2} = \frac{24}{2} }[/tex]

Calculate

⇒[tex] \sf{w = 12 \: inches}[/tex]

Width of a rectangle ( w ) = 12 inches

Now, finding the area of a rectangle having length of 20 inches and width of 12 inches

[tex] \boxed{ \sf{area \: of \: rectangle = length \: \times \: \: width}}[/tex]

plug the values

⇒[tex] \sf{area \: of \: rectangle =20 \times 12 }[/tex]

Multiply the numbers : 20 and 12

⇒[tex] \sf{area \: of \: rectangle = 240 \: {inches}^{2} }[/tex]

Hence, Area of a rectangle = 240 inches²

Hope I helped !

Best regards!

Answer:

Linear

Step-by-step explanation:

It goes up by 2 each time, so it would be linear.

Answer:

the second choice which is positive 4 is the answer

Answer:

4

Step-by-step explanation:

(-80)/(-20)=

(-40)/(-10) when divided by 2

(-20)/(-5) when divided by 2 again

(-4)/(-1) when divided by 5

4 when divided by -1

Hope this helps

(pls mark brainliest)

Answer:

the square root of 225 is 15.9

Answer:

15.♾

Step-by-step explanation:

Answer:

Step-by-step explanation:

sweet

Answer:

Step-by-step explanation:

- 6x + 9 > 7x + 74

Treat them as being equal first.

Subtract 9 from both sides.

- 6x + 9 - 9 > 7x + 74 - 9

- 6x > 7x + 65

Subtract 7x from each side

- 6x - 7x > 7x - 7x + 65

- 13x > 65

Divide each side by -13

- 13x / -13  > 65 / -13

x < -5

So x hust be smaller than -5 meaning -6 works but -4 doesn't.

Answer:

27

Step-by-step explanation:

if you add 4 to 3 you get 7 and if you add 4 to 7 you get 11 so keep adding 4 to all the numbers and you will get the next number.

Answer:

The pattern is going by 4 so your next number would be 27

Step-by-step explanation:

Count from 3 to reach 7 then you get 4 same goes for the rest of the numbers so if you count 4 more of 23 you get 27

Hope that answered ur question

Answer:

x=5 and y=2

Step-by-step explanation:                              

[tex]x=y+3\\x=2+3\\x=5[/tex]                           [tex]x+y=7\\y+3+y=7\\2y+3=7\\2y=7-3\\2y=4\\ \frac{2y}{2}=\frac{4}{2}\\ y=2[/tex]                    

The solution of the system, x + y = 7, x = y + 3 is x = 5 and y = 2.

Equation: A statement that two variable or integer expressions are equal. In essence, equations are questions, and the motivation for the development of mathematics has been the systematic search for the answers to these questions.

Equations are statements in mathematics that have two algebraic expressions on either side of the equals (=) sign. It shows that the expressions printed on the left and right sides have an equal relationship.

Given:

x + y = 7

x = y + 3

Write both equations as shown below,

x = -y + 7

x = y + 3

Add both equations,

x + x = -y + y + 7 + 3

2x = 10

x = 5,

5 = y + 3

y = 5 - 3

y = 2

To know more about equation:

https://brainly.com/question/12788590

#SPJ2

Complete question is;

Henrique began to solve a system of linear equations using the linear combination method. his work is shown below

1. 3 (4x-7y=28) -> 12x-21y=84

-2 (6x-5y=31) -> -12x 10y =62

2. 12x - 21y = 84

-12x + 10y = -62

-----------------------

-11y = 22

3. y= -2

complete the steps used to solve a system of linear equations by substituting the value of y into one of the original equation s to find the value of x. what is the solution to the system

Answer:

x = 3.5

Step-by-step explanation:

We are given;

1. 3(4x - 7y = 28) -> 12x - 21y = 84

-2(6x - 5y = 31) -> -12x + 10y = 62

2. 12x - 21y = 84

-12x + 10y = -62

-----------------------

-11y = 22

3. y= -2

Since y = - 2, let's put -2 for y into the equation; 12x - 21y = 84

This gives;

12x - 21(-2) = 84

This gives;

12x + 42 = 84

12x = 84 - 42

12x = 42

x = 42/12

x = 3.5

Answer:

126

Step-by-step explanat

(30)(15) - (72%)

Answer:

$1296

Step-by-step explanation:

paycheck in 1 month: $15/hour * 30 hours/week * 4 weeks/month = $1800/month

net pay = 72% of paycheck in 1 month = 72% of $1800 =

= 0.72 * $1800 = $1296

Answer:

each

Step-by-step explanation:

Answer:

The total is: 74$

Step-by-step explanation:

1.50$ times 40 equals 60. Then you have to add up the cost you usually get per month which is 14$. 60 plus 14$ = 74$

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

The total money to pay in a month in which she downloaded 40 songs is $74.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Cost per month for streaming music = $14

Cost per song for download = $1.50

Total cost for downloading 40 songs.

= 40 x 1.50

= $60

The total cost for the month.

= Monthly charges + Cost of downloading 40 songs

= $14 + $60

= $74

Thus,

The total money to pay in a month in which she downloaded 40 songs is $74.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

In geometry, transformation involves changing the position or size of a shape.

The information, Jada needs to provide are:

When a polygon is translated, the direction(s) of translation and the units of translation must be stated.

Take for instance:

A translation of 2 units left.

The direction of the above translation is left, while the unit is 2

Also, when a polygon is reflected, the line of reflection must be stated. There are several lines of reflection; the most popular ones are:

Read more about reflection and translation at:

https://brainly.com/question/15577335

Answer:

[tex] - 4.67[/tex]

Step-by-step explanation:

[tex] \frac{p}{2 - 5} = \frac{14}{2 - 5} = \frac{14}{ - 3} = - 4.67[/tex]

Answer:

v=3

Step-by-step explanation:

Answer: It is B

Step-by-step explanation:

Answer:

[tex]\Huge \boxed{\mathrm{\bold{a)} \ < \ }}[/tex]

[tex]\rule[225]{225}{2}[/tex]

Step-by-step explanation:

1 - 5 __ 9

Subtract.

-4 __ 9

We know that -4 is less than 9.

The “less than” symbol is “<”.

[tex]-4<9[/tex]

[tex]\rule[225]{225}{2}[/tex]

Answer:E

Step-by-step explanation:

just took the test

The atmosphere is divided into five different layers, based on temperature.

To learn more about Earth's atmosphere refer

https://brainly.com/question/24925283

#SPJ2

The approximate probability that Ankit will make all three shots is 0.405 or 40.5%.

A probability distribution known as the binomial distribution is used to characterize the number of successes in a certain number of independent trials, where each trial has only one of two potential outcomes (success or failure) and the chance of success is constant across all trials. For determining the likelihood of achieving a certain number of successes in a set number of trials, it is utilised.

Given, Ankit makes 74% of the free throws.

Using binomial distribution we have:

[tex]P(X=k) = (n C k) * p^k * (1-p)^{(n-k)}[/tex]

For k = 3 we have:

[tex]P(X=3) = (3 C 3) * 0.74^3 * (1-0.74)^{(3-3)}\\\\P(X=3) = 0.74^3[/tex]

P(X=3) ≈ 0.405

Hence, the approximate probability that Ankit will make all three shots is 0.405 or 40.5%.

Learn more about binomial distribution here:

https://brainly.com/question/31197941

#SPJ1

Answer:

3

Step-by-step explanation:

15-2x=3x

or,3x+2x=15

or,5x=15

or,x=15/5

Therefore, x=3.

Answer:

work shown and pictured

Answer: $1.17 per drink

Step-by-step explanation:

Let x=the cost of one drink

11.5+6x=18.5

subtract 11.5 on both sides

11.5+6x-11.5=18.5-11.5

6x=7

Divide 6 on both sides

6/6 x=7/6

x=7/6

7/6≈$1.17

Hope this helps!! :)

Please let me know if you have any question

Answer: False

Point Z is part of the sequence XYZ, so that means point Z is part of plane XYZ.

The correct answer will be option C Randomization of students in morning and afternoon classes.

Psychology is the scientific study of the mind and behavior, according to the American Psychological Association.

The only way to minimize this effect would be through randomization of students in morning and afternoon classes.

Doing so apply the factor of skill from an individual student to either time of day class greatly lessens the overall effect that it has on the results.

This therefore, minimizes the effect it has on the experiment itself, since the same students that have been studying in a certain time of day would be randomized and not have the same environment that they are used to.

To know more about Psychology follow

https://brainly.com/question/12011520

#SPJ2

Answer:

Step-by-step explanation:

Direct control by requiring every class to take the same test

Answer:

see below

Step-by-step explanation:

alaikum salam.

2. find cos Ф,   sin Ф,  tan Ф

cos Ф = 5 / 13

Ф = 67.38

sin Ф = 12 / 13

Ф = 67.38

tan Ф = 12 / 5

Ф = 67.38

-----------------------

3. find sin β,  cos β,  tan β

sin β = 4 / 5

β = 53.13

cos β = 3 / 5

β = 53.13

tan β = 4 / 3

β = 53.13

Answer: Step-by-step explanation

2.

cos Ф = 5 / 13 ,       Ф = 67.38

sin Ф = 12 / 13 ,      Ф = 67.38

tan Ф = 12 / 5         Ф = 67.38

3.

sin β = 4 / 5    β = 53.13

cos β = 3 / 5    β = 53.13

tan β = 4 / 3     β = 53.13