Please help me. I already have the systems of linear equations which is y=87x+2129
Y=171x
I had solved using substitution method and got y=4334.85 and x=25.35

I attached the question that I need help with.

Answer: not clear

Step-by-step explanation:

Answer:

Step-by-step explanation:

Hola!

Las variables aleatorias pueden Cualitativas o cuantitativas.

Las variables aleatorias cualitativas son aquellas que se refieren a atributos o características de los individuos o unidades de interés que no son cuantificables. Dentro de estas variables se pueden identificar dos tipos:

Ordinales: estas variables representan cierto tipo de cualidad que tiene un orden natural, por ejemplo: Opinión de una persona sobre una película de estreno, calificada en "muy buena", "buena", "regular", "mala", "muy mala"

Estas calificaciones son claramente cualidades, pero tienen un orden, todo el mundo sabe que una calificación "regular" es mejor que una "muy mala" y a su vez peor que una calificación "buena"

Nominales: Son aquellas que indican atributos no cuantificables que no tienen un orden natural. Por ejemplo, color de cabello, raza, sexo.  

Las variables aleatorias cuantitativas son aquellas que registran valores numéricos, dicho de manera coloquial: "cuentan cosas". Estas variables siempre toman valores dentro de un rango o intervalo de definición, teniendo esto en cuenta podemos definir dos tipos de variables aleatorias cuantitativas:

Continuas: pueden tomar cualquier valor dentro del intervalo de definición de la variable, por ejemplo, la estatura, el peso, la temperatura, entre un valor y otro existen infinita cantidad de valores que la variable puede tomar. En muchos casos, esto está restringido a la precisión de los métodos utilizados para tomar las mediciones.  

Por ejemplo, una balanza puede tomar pesos de kilogramo a kilogramo, ej: 20kg, 21kg, 22kg mientras que una más precisa puede tomar pesos intermedios de los mismos objetos, ej: 20.1kg, 21.5kg, 22.9kg y otra más precisa puede indicar mediciones más exactas, ej: 20.142kg, 21.538kg, 22.973kg es decir que, cuanto más precisa la balanza que usemos para obtener las mediciones, mayor será la gama de valores que puede tomar la variable.

Discretas: solo pueden tomar ciertos valores dentro del intervalo de definición de la variable aleatoria, a diferencia de las variables continuas, entre los valores posibles que pueden tomar estas variables, no se encuentra nada, es decir que "saltan" de valor en valor. Por esto también se las llama variables discontinuas.

Uno de los ejemplos más comunes de variable discreta es hacer rodar un dado de 6 caras, la variable puede tomar valores 1, 2, 3, 4, 5, 6 pero no puede tomar valores entre esos valores, es decir, el dado nunca va a mostrar valores intermedios como "2.5" o "3.3".

Dicho esto pasemos a identificar el tipo de cada ejemplo:

a) y c) Calidad del producto

Esta es algo engañosa, porque todo depende de la escala determinada para medir la calidad.

Es decir, si la escala de medición de la calidad de un objeto es de 0 a 10, siendo cero lo peor y 10 lo mejor, entonces la variable es cuantitativa discreta.

Sin embargo, si la escala es nominal, por ejemplo: Alto, medio, bajo, entonces la variable es cualitativa y como las categorías tienen un orden natural, no solo es cualitativa, sino que también es ordinal.

b) y d) Tiempo de publicidad

Esta variable aleatoria "cuenta el tiempo", toma valores numéricos con lo cual es cuantitativa y, además, puede tomar cualquier valor dentro del intervalo de definición, todo depende de la precisión del reloj utilizado lo que la califica como variable continua.

Espero que tengas un buen días!

Answer:

x > - 1.1

All values that are more than - 1.1.

Step-by-step explanation:

4(2 – x) > –2x – 3(4x + 1)

8 - 4x > - 2x - 12x - 3

8 - 4x > - 14x - 3

8 - 4x + 14x > - 14x+ 14x - 3

8- 8 + 10x > - 3 - 8

10x > - 11

x > - 1.1

All values that are more than - 1.1.

Answer:

1.1

Step-by-step explanation:

Answer: pretty sure it's this

Step-by-step explanation:

Answer:3

Step-by-step explanation:

Answer:50%

Step-by-step explanation:

Answer:

The answer is 50%

Step-by-step explanation:

Answer:

1400ft²

Step-by-step explanation:

Given

Room Dimension: 20 ft by 25 ft by 10 ft

Where Length = 20 ft

Width = 25 ft

Height = 10 ft

Required

Surface area of painted walls and ceiling

We'll assume that the room is rectangular in shape and all 4 sides are covered.

This means that Mickey will paint 4 walls and 1 ceiling.

The dimension of the 2 of the 4  walls is as follows;

20ft by 10ft, 25ft by 10ft,

Because opposite sides of a rectangle are equal, the dimension of the remaining 2 walls is: 20ft by 10ft, 25ft by 10ft

Calculating the area of the 4 walls;

[tex]Area = 20ft * 10ft + 25ft * 10ft + 20ft * 10ft + 25ft * 10ft[/tex]

[tex]Area = 200ft^2 + 250ft^2 + 200ft^2 + 250ft^2[/tex]

[tex]Area = 900ft^2[/tex]

The dimension of the ceiling is as follows:

20ft by 25ft

Calculating the area of the ceiling

[tex]Area = 20ft * 25ft[/tex]

[tex]Area = 500ft^2[/tex]

So, the area Micky will cover = Area of 4 walls + Area of ceiling

Total Surface Area [tex]= 900ft^2 +500ft^2[/tex]

Total Surface Area = [tex]1400ft^2[/tex]

Hence, Micky will cover 1400ft²

Answer:

314.16 m

Step-by-step explanation:

The distance across the track is 100 metres. This means that the diameter is 100 m.

The track is circular, so, we need the circumference.

The circumference of a circle is given as:

C = πD

where D = diameter

Therefore, the circumference of the track is:

C = π * 100 = 314.16 m

She walked a distance of 314.16 m

Step-by-step explanation:

Therefore,

(x+20) + (x-10) + (2x-30) = 180° (Sum of interior angles of a triangle)

Or, x+x+2x+20-10-30 = 180°

Or, 4x-20 = 180°

Or, 4x= 180+20

Or, 4x= 200°

Or, x= 200°/4

Therefore, x= 50°

So,

(x+20)

= 50+20

=70°

(x-10)

= 50-10

40°

(2x-30)

= 2×50-30

=100-30

=70°

Hope it helped, If it did, please mark it as the brainliest answer :)

Answer:

a.114.4kg

b. 486kg

Step-by-step explanation:

Firstly , we want to know the value with which the apples weigh more than the oranges

To calculate this, we simply subtract the weight of the oranges from that of the apple

Mathematically, that would be ;

300.2-185.8 = 114.4kg

The total weight of the things bought is calculated by adding both weights together

That would be 185.8 + 300.2 = 486 kg

Answer:

2 ( 2d -3)(2d+3)

Step-by-step explanation:

8d^2 - 18

Factor out the greatest common factor 2

2(4d^2 -9)

Rewriting the terms in parentheses

2 (( 2d)^2 - 3^2)

We recognize that this is the difference of squares ( a^2 - b^2) = (a-b)(a+b)

2 ( 2d -3)(2d+3)

Answer:

[tex]2(2d-3)(2d+3)[/tex]

Step-by-step explanation:

[tex]8 {d}^{2} - 18 \\ 2(4 {d}^{2} - 9)

=2(2d-3)(2d+3) [/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

The exponential function represented on the graph is f(x) = (1/3)[tex].^x[/tex]. The correct option is B.

The mathematical expression f(x)=exp or e^x denotes the exponential function. The word, unless specifically stated differently, normally refers to the positive-valued function of a real variable, though it can be extended to complex numbers or adapted to other mathematical objects like matrices or Lie algebras.

A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.

The given graph is representing the exponential function f(x) = (1/3)[tex].^x[/tex] The graph is attached with the answer below. The graph is showing the inverse fraction of ( 1/3).

Therefore, the exponential function represented on the graph is f(x) = (1/3)[tex].^x[/tex]. The correct option is B.

To know more about exponential functions follow

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ANSWER:

:2/5 * 560 = D) 224

Answer:

  15% less than its regular price

Step-by-step explanation:

If the toy is marked down 15% in June, its cost during June is 15% less than its regular cost. (It will be 85% of its regular cost.)

Answer:

yx

​2

​​ −3y

​2

​​ +3x

​2

​​ +27

Step-by-step explanation:

Answer:

27

Step-by-step explanation:

he started by cutting one log into 3

1×3=3

then cutting each of those into 3

3×3=9

then again

9×3=27

Answer:

A =12.92 cm^2

Step-by-step explanation:

The area of a triangle is given by

A = 1/2 bh where b is the base and h is the height

A = 1/2 ( 7.6) ( 3.4)

A =12.92 cm^2

Answer:

[tex] = 12.92 {cm}^{2} [/tex]

Step-by-step explanation:

[tex]area = \frac{1}{2} \times b \times h \\ = \frac{1}{2} \times 7.6 \times 3.4 \\ = \frac{25.84}{2} \\ = 12.92 {cm}^{2} [/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

2x^2 +4x -4

Step-by-step explanation:

(2x^2 - 2x) + (6x - 4)

Combine like terms

2x^2 +6x-2x -4

2x^2 +4x -4

Answer: 1/3

Step-by-step explanation: Using Radical Properties, Whenever we have two or more radical terms which are multiplied with same index, then we can put only one radical and multiply the terms inside the radical.

[tex]\sqrt{ \frac{5}{x^2} }\times \sqrt{ \frac{x^2}{45} }=\sqrt{ \frac{5x^2}{45x^2} }=\sqrt{ \frac{1}{9} }=\frac{1}{3}[/tex]

The expression √(5/x²).√(x²/45) is equivalent to 1/3.

An expression is combination of variables, numbers and operators.

The given expression is √(5/x²).√(x²/45)

Square root of five by x square times square root of x square by forty five

√(5/x²).√(x²/45)

√(5x²/45x²)

Cancel out the x² in the numerator and denominator

√(5/45)

Divide numerator and denominator by 5

√(1/9)

1/3

Hence,  the expression √(5/x²).√(x²/45) is equivalent to 1/3.

To learn more on Expressions click:

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Answer:

50

Step-by-step explanation:

So say the bill is x.

18% of x = 0.18x

0.18x = 9

x = 50

Answer:

it is 50

Step-by-step explanation:

you have to do 9 x 10/18

Answer:

They have the same domain and range

Step-by-step explanation:

Although they are different equations, they both have a domain of

[0,∞)

and a range of

[0,∞)

Answer:

cosine = adjacent / hypotenuse

cosine (62) = x / 12

x = 12 * 0.46947

x = 5.6

Step-by-step explanation:

Answer:

The least possible number of hours you can work at your office job is 20.

Step-by-step explanation:

$12/h ----> office

$10/h ----> babysitting

"o" -----> hours office job

"b" -----> hours babysitting job

[tex]12x + 10y = 440\\x + y \leq 40\\12x + 10y = 440 -----> 6x + 5y = 220 ----> y = \frac{220-6x}{5} \\\\x + y \leq 40\\x + \frac{220-6x}{5} \leq 40\\5x + 220 - 6x \leq 200\\x \geq 20[/tex]

Answer:

[tex]2x^2-x+3[/tex]

Step-by-step explanation:

So just divide the areas by the length:

[tex]2x^2-x+3[/tex]

And that is your width.

Answer:

iddk

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

Its pretty simple. You just have to multiply 7 and 2 to get the product of 14. Hopw this helps

Answer:

14 liters every week.

Step-by-step explanation:

There are 7 days in a week.

If he drank 2 liter every day, you could solve this the following ways...

2+2+2+2+2+2+2=14 because 2 liter every day for 7 days

7 x 2  because there are 7 days in a week, and he drank 2 liters a day, so 7 x 2 would work.

7 + 7 would also work.

Your welcome.

I really hope I helped.

Can I plz have brainliest please?

Answer:

1.Corresponding angles theorem

2.Linear postulate

3.By the definition of supplementary angles

Step-by-step explanation:

We are given that  

[tex]w\parallel x \ and \ y[/tex] is a transversal.

We have to prove [tex]\angle 3[/tex] and [tex]\angle 5[/tex] are supplementary

Proof:

1.Given that [tex]w\parallel x \ and \ y[/tex] is a transversal.

We know that [tex]\angle 1\cong \angle 5[/tex]

Reason:Corresponding angles theorem

Therefore, [tex]m\angle 1=m\angle 5[/tex]

by the definition of congruent.We also know that, by definition, angle 3 and angle 1 are a linear pair.

Therefore, they are supplementary by linear pair postulate

By the definition of supplementary angles

[tex]m\angle 3+m\angle 1=180^{\circ}[/tex]

Now, we can substitute [tex]m\angle 5=m\angle 1[/tex]

Then, we get

[tex]\m\angle 3+m\angle 5=180^{\circ}[/tex]

Therefore, by the definition of supplementary angles,angle 3 and angle 5 are supplementary

Answer:

1. Corresponding angles theorem

2. Linear pair postulate

3. Definition of supplementary angles

Answer:

1) Reflection in the x-axis

A' = (-2, -3)

2) Rotation of 180° clockwise about the origin

A'' = (2, 3)

3) Translation of 3 units down and 4 units to the right

A''' = (6, 0)

Step-by-step explanation:

The transformations are as follows;

1) Reflection in the x-axis

Here the x-coordinate is the same and the y-coordinate changes sign.

Therefore, we have;

A (-2, 3)

After reflection in the x-axis becomes A' = (-2, -3)

2) Rotation of 180° clockwise about the origin

When, a point (x, y) is rotated 180° clockwise about the origin, it becomes (-x, -y)

Therefore, we have;

A' = (-2, -3) becomes A'' = (2, 3)

3) Translation of 3 units down and 4 units to the right

Translation of 3 units down and 4 units to the right = [tex]T_{(4, -3)[/tex]

Which gives

A''' = (2 + 4, 3 - 3) = (6, 0).

Answer:

15 inches

Step-by-step explanation:

We can solve this problem using the Pythagorean theorem. The formula is:

[tex]a^{2} + b^{2} = c^{2}[/tex]

where 'c' is the hypotenuse (the longest side) and 'a' and 'b' are the legs (the other sides).

First, draw a diagram for the problem. (See the photo attached below)

We know the other leg is 8 and the hypotenuse is 17. 'a' is the missing side.

a = ?

b = 8

c = 17

Substitute the values into the equation.

[tex]a^{2} + b^{2} = c^{2}[/tex]

[tex]a^{2} + 8^{2} = 17^{2}[/tex]

Rearrange to isolate 'a'

[tex]a^{2} = 17^{2} - 8^{2}\\[/tex]               Square root both sides

[tex]a = \sqrt{17^{2} - 8^{2}}[/tex]             Square each number

[tex]a = \sqrt{289-64}[/tex]             Subtract under the root

[tex]a = \sqrt{225}[/tex]                     Find the square root

[tex]a =15[/tex]                          Final answer

Therefore, the TV is 15 inches tall.

Answer:

20 days.

Step-by-step explanation:

In this case we must make an inverse proportionality rule, it is inverse because the fewer people there are, the more days must survive. In other words, we know that 2000 people can resist for 15 days, now, if there are no longer 2000 people, but 500 less, that is, 1500 (2000 - 500) how many days can they resist.

people    days

 2000       15

 1500         x

x = 2000 * 15/1500

x = 20

That is, they could last 20 days.