Un técnico de reparaciones de electrodomésticos cobra 25 € por la visita, más 20 € por cada hora de trabajo. A) Escribe la expresión algebraica (fórmula) que nos da el dinero que le tenemos que pagar en total de acuerdo con el tiempo que esté trabajando

Answers

Answer 1

Answer:

x= 25+20y

Step-by-step explanation:

De acuerdo a la situación planteada, la expresión algebraica debe indicar que 25€ que es el valor por la visita más 20€ multiplicado por el número de horas trabajadas es igual al dinero total que se debe pagar. La expresión es:

x= 25+20y, donde

x= valor total a pagar

y= número de horas trabajadas


Related Questions

Johnathan picked colored beads from a jar 50 times, replacing the bead each time. He picked a red bead 12 times, a yellow bead 14 times, and a blue bead 24 times. How many blue beads should Johnathan expect to pick out of 150 times?

Answers

Answer: 72 beads

Step-by-step explanation:

From the question, we have the information that Johnathan picked colored beads from a jar 50 times and replaced the bead each time. Jonathan picked a red bead 12 times, yellow bead 14 times, and a blue bead 24 times.

Out of 50 picks, the following beads were picked:

Red = 12

Yellow = 14

Blue = 24

Total = 50

Fraction of blue bead = 24/50 × 100

= 48%

The blue beads that Johnathan will pick out of 150 beads will be:

= 48% of 150

= 48/100 × 150

= 0.48 × 150

= 72 blue beads

Jonathan will pick 72 blue beads out of 150 beads.

Answer:

72 beads

       

:):):):):):):):)

Please answer correctly !!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!

Answers

Answer:

c

Step-by-step explanation:

they share the same min of -3

Answer:

The minimum values are equal

Step-by-step explanation:

The minimum for f(x) = (4,-3)  since the parabola is written in vertex form

y = a(x-h)^2 +k

The minimum is at x=4 the the y value is -3

Looking at the graph for g(x) the minimum is at x=-3 y = -3

Since the y values are equal

The minimum values are equal

What is the range of the function?
(1,2) (2,4) (3,9) (4,16)

Answers

Answer:

{ 2 , 4 , 9 , 16 }

Step-by-step explanation:

Answer:

range ={ 2,4,9,16}

Step-by-step explanation:

range is  related to y coordinate of the points

which auser explains why
the sum of 12+12
12+12 is an even
number?

Answers

Answer:

An even number is a number that can be divided into two equal halves.

Also even numbers end in one of these digits: 0, 2, 4, 6, or 8

12 + 12 + 12 + 12 = 48

48 with the digit 8

48 divided in half gives two equal halves:

48/2 = 24

The number 24 can be added twice to check that the answer is correct:

24 + 24 = 48

So to summarize:

The sum of 12 + 12 + 12 + 12 is an even number because it can be equally divided in two halves and it ends in the digit 8.

hope this helps and please make me brainliest if it did :)

Please answer correctly !!!!!!!! Will mark brainliest !!!!!!!!!!!!!!

Answers

Add 1 to both sides

Multiply both sides by 4

Take the square root of both sides

Subtract 5 from both sides

In this problem, you are trying to isolate the x. In order to do that you have to get rid of all the other numbers surrounding it. The first thing you're going to do is move the 1. To get rid of the -1 you have to do a +1. What you do to one side you have to do to the other. Therefore, you have to add +1. Next, you will move the 1/4 by multiplying by the reciprocal which is 4 (because 1/4 x 4 = 1, this gets rid of the 1/4 on the left side). After that you will do the opposite of square, which is to take the square root. Lastly, you will subtract the five for the same reason you added the 1.

20 is 40 percent of??? please need answer

Answers

Answer:

x = 50

Step-by-step explanation:

Let x be the original number.

This question can be expressed as:

0.4x = 20

0.4 of the original number is 20.

Now, we can directly solve for x:

4x = 200

x = 50

Answer:

8

Step-by-step explanation:

40 times 0.20 is 8.

You can also use 40 percent of 20, which is also 8, but the original is easier to comprehend.

The length of a rectangular swimming pool is p m and its width is q m. It is given that the length of the swimming pool is twice its width. If the perimeter of the swimming pool is 150 m, find the values of p and q.

(**please use the simultaneous linear equations in two variables to solve this question)

**if you have answer this question I will choose you to be the brainlest answer** ​

Answers

Answer: q = 25 m, p = 50 m

Step-by-step explanation:

p is the length, and q is the width.Since the length is twice as long as the width, we can come up with the equation: p = 2qSince the perimeter is 150, we can also come up with this formula since the perimeter is all sides added together: 2p + 2q = 150Since we have two equations, we can just plug them into each other. First, let's substitute the 2q in the second equation with p that is defined in the first equation: 2p + p = 150If we simplify that, we get: 3p = 150Now we know that p = 50 m.Now, if you plug in 50 into the first equation you get: 50 = 2q.Next, just simplify, and you know that q = 25 m.Therefore, p = 50 m, q = 25 m.

The original price of a pair of jeans is $32. The sale price is 15%off the original price. What is the amount off the original price?

Answers

Answer:

4.8

Step-by-step explanation:

Multiply the Price Percentage by the Original Price

Multiply the original price and the percentage that represents the sale price; the result is the sale price of the blazer in dollars: $90 × 0.7 = $63. So if the blazer is on sale for 30 percent off, you'll pay the remaining 70 percent of the price, which is $63.

Helps please.........

Answers

Answer:

The answer would be C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

[tex]\sqrt{\dfrac{36}{25}}=\sqrt{\dfrac{6^2}{5^2}}=\dfrac{6}{5}[/tex]

Therefore, the correct answer is choice C. Hope this helps!

todos los numeros negativos son enteros verdadero o falsom.​

Answers

Answer:

False

Step-by-step explanation:

numbers are integers, the integers are negative, zero and positive, 

while natural numbers are only positive, 

therefore the statement is false

 . False. Integers comprise negative and positive numbers (...- 3, -2, -1, 0, 1, 2, 3 ...) and natural numbers only comprise positive integers (0, 1, 2, 3 ...)  

NEED HELP: What is the solution to 3(2x – 4) + 2(x + 7) = 6

Answers

Answer:

1/2

Step-by-step explanation:

3(2x – 4) + 2(x + 7) = 66x-12+2x+14=68x+2=68x=4x=4/8x=1/2
The answer is 1/2 I used my ti- calculator

Drag the tiles to the correct Boxes to complete the pairs
Match each function to its domain.​

Answers

Answer:

third function: first domain

first function: second domain

last function: third domain

second function: last domain

write a quadratic function f whose zeros are -2 and -9

Answers

Answer:

f(x) = x^2 + 11x + 18.

Step-by-step explanation:

As the zeroes are -2 and -9 the factored form  is

f(x) = a(x - (-2))(x -  (-9))   where a is some constant.

As we want any quadratic function with theses zeros we  can let a = 1 so:

f(x) = (x + 2)(x + 9)

f(x) = x^2 + 2x + 9x + 18

f(x) = x^2 + 11x + 18.

The required quadratic function is given as x²+11x+18 = 0,

Given that,
To write a quadratic function f whose zeros are -2 and -9

What are functions?

Functions is the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.

Here,
x = -2 and x = -9
x  2 = 0  and x + 9 = 0
The function is given as,
(x + 2)(x + 9) = 0
x²+11x+18 = 0,

Thus, the required quadratic function is given as x²+11x+18 = 0,

learn more about function here:

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Pls solve this as soon as possible first gets a brainliest

Answers

Answer:

34

Step-by-step explanation:

4+15+15

Answer:

Area= 34cm squared

Work out the area of the given shape ;)

1. 36 sq m
2. 24 sq m
3. 48 sq m

Answers

Answer:

The answer would be, 36 sq m

Find the value of x in the triangle below (please help mee)

Answers

Answer:

[tex]x=50[/tex]

Step-by-step explanation:

An isosceles triangle has both two equal sides and two equal angles.

[tex]180-80[/tex]

[tex]100/2[/tex]

Which survey is biased?
A) going to a grocery store and asking people what their favorite grocery store is.
B) going to the grocery store and asking people what type of food is their favorite
C) going to a grocery store and asking people what clothing store is their favorite
D) Going to grocery store and asking people what radio station do you listen to most often

Answers

Answer:

A

Step-by-step explanation:

A is biased because those people at the grocery store will most likely like that grocery store, since they went there to shop in the first place.

B, C, and D are not biased because there is no correlation between the grocery store and the survey questions.

Option b) going to grocery store and asking people what type of food is their favourite

what is the area of the triangle below?

Answers

Answer: 10

Step-by-step explanation:I like using this method:

Put a square which covers this triangle

Find the area of the rectangle which is 20

Half it which is 10

Now you have the area which is 10

Answer: The other answer is incorrect!

Step-by-step explanation:

An easier way is just imagine it being straight and not slanted. Counting the base its 3blocks and counting from the highest point all the way to the base its 4 blocks. Base=3 blocks and height=4 blocks. Substituting into the tirangle area formula which is b(h)/2 (base times height divided by 2).

You have 3x4=12.

Then 12/2=6 blocks

Therefore the area of the given triangle is 6 blocks squared (din)t forget the square).

The other answer is incorrect because this triangle is not half of this rectangle and in this question it’s just a grid (we have to use the grid)!

Trust me I know this.

Hope this helps!

HELP! Thank you in advance <3

Answers

Answer:

WALK=9 PUPILS

BUS=12 PUPILS

CAR=4 PUPILS

BIKE=4 PUPILS

Step-by-step explanation:

TOTAL=360/10 = 36                          120+90=210

BUS=120/10=12                                  360-210=75/2=37.5

WALK=90/10=9

CAR=37.5/10=3.75=4

BIKE=37.5/10=3.75=4

A line that passes through [-7,3] and [-6,-1]

Answers

Sorry idk, but I’ll try to do it

Tom is playing football. He carries the ball forward 7 1/3 yards and then goes backwards 2 feet. How far did Tom carry the ball, in feet after these two plays?

Answers

Answer:

20 feet

Step-by-step explanation:

(7 1/3)3 = 22 feet

22 - 2 = 20 feet

THE is the right question not the last one

Answers

Answer:

6

Step-by-step explanation:

1 1/2 = 3/2

3/2 / 1/4 = 3/2 * 4 = 12 / 2 = 6

Answer:

6

Step-by-step explanation:

One recipe uses 1/4 cup of red onions.

They have 1 1/2 cups of red onions.

We need to divide 1 1/2 by 1/4.

First, we convert the mixed numeral into a fraction. Then, to divide by a fraction, we multiply by the reciprocal of the fraction.

[tex] 1 \dfrac{1}{2} \div \dfrac{1}{4} = [/tex]

[tex] = \dfrac{1 \times 2 + 1}{2} \div \dfrac{1}{4} [/tex]

[tex] = \dfrac{3}{2} \times \dfrac{4}{1} [/tex]

[tex] = \dfrac{12}{2} [/tex]

[tex] = 6 [/tex]

Which equations represent the line that is parallel to 3x − 4y = 7 and passes through the point (−4, −2)? Select two options. y = –Three-fourthsx + 1 3x − 4y = −4 4x − 3y = −3 y – 2 = –Three-fourths(x – 4) y + 2 = Three-fourths(x + 4

Answers

Answer:

3x-3y=-4 and y+2=3/4x+4

Step-by-step explanation:

parallel line equations have the same slope. just find the equation that also has positive 3 in this problem

Answer:

B & D

Step-by-step explanation:

Which is equivalent to “12 chairs for every 3 tables”?

Answers

Answer:

4 chairs for every table.

Step-by-step explanation:

Write a ratio:

12 chairs : 3 tables = 4 chairs : 1 table

4 chairs for every table.

There are 4 chairs for every table is equivalent to the given sentence " 12 chairs for every 3 tables"

What is the proportion?

A mathematical assessment of two numbers is called a proportion. If two sets of provided numbers rise or fall in the same relation, then the ratios are said to be directly proportional to each other.

The given statement is "12 chairs for every 3 tables"

According to the given question, translate the phrase into an algebraic form :

We can write a proportion as

12 chairs : 3 tables = 4 chairs : 1 table

12 / 3 = 4 / 1

This means 4 chairs for every table.

Therefore, there are 4 chairs for every table is equivalent to the given sentence " 12 chairs for every 3 tables"

Learn more about the proportion here:

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Show all work to identify the asymptotes and zero of the function f of x equals 5 x over quantity x squared minus 25

Answers

Answer: VA: x = {-5, 5), HA: y = 0, Zeros: x = 0

Step-by-step explanation:

[tex]f(x) = \dfrac{5x}{x^2-25}[/tex]

Vertical asymptotes: The denominator cannot equal zero.

x² - 25 = 0  

(x - 5)(x + 5) = 0

x = 5, x = -5

Horizontal Asymptote: Let m represent degree of numerator and n represent the degree of the denominator.

If m > n then NO asymptoteIf m = n, then y = coefficient of m ÷ coefficient of nIf m < n, then y = 0

For the given equation, m = 1 and n = 2 so we use option 3 --> y = 0

Zeros: Set the equation equal to zero and solve for x.

[tex]0=\dfrac{5x}{x^2-25}[/tex]

Multiply both sides by x²- 25   -->    0 = 5x

Divide both sides by 5       -->          0 = x

Using function concepts, it is found that:

The zero of the function is [tex]x = 0[/tex].The vertical asymptotes are [tex]x = \pm 5[/tex].The horizontal asymptote is [tex]y = 0[/tex].

The function is given by:

[tex]f(x) = \frac{5x}{x^2 - 25}[/tex]

Applying the subtraction of perfect squares, the function will be given by:

[tex]f(x) = \frac{5x}{(x - 5)(x + 5)}[/tex]

The zero is the value of x for which:

[tex]f(x) = 0[/tex]

In a fraction, it is when the numerator is zero, thus:

[tex]5x = 0[/tex]

[tex]x = \frac{0}{5}[/tex]

[tex]x = 0[/tex]

The vertical asymptotes are the values of x which are outside the domain, which in a fraction are the zeroes of the denominator, thus:

[tex](x - 5)(x + 5) = 0[/tex]

[tex]x = \pm 5[/tex]

The horizontal asymptote is:

[tex]y = \lim_{x \rightarrow \infty} f(x)[/tex]

Hence:

[tex]y = \lim_{x \rightarrow \infty} \frac{5x}{x^2 - 25} = y = \lim_{x \rightarrow \infty} \frac{5x}{x^2} = y = \lim_{x \rightarrow \infty} \frac{5}{x} = 0[/tex]

A similar problem is given at https://brainly.com/question/23690889

Please answer correctly !!!!!!! Will mark brainliest !!!!!!!!!

Answers

Answer:

10x^4 - 4x + 6

Explanation:

Just take the width of the rectangle and multiply each number by 2, including the exponent.

Answer & Step-by-step explanation:

We can solve this problem by multiplying the the expression by 2 one term at a time just like it is shown in the diagram. Your exponent will remain the same.

(5x² * 2) + (-2x * 2) + (3 * 2)

10x² - 4x + 6

So, once you multiply th terms togehter, your final answer will (10x²-4x+6)

see picture for question

Answers

Answer:

6.

Step-by-step explanation:

Both of the arcs that subtend the segments are congruent. By definition, both segments are congruent as well.

Since the length of segment EG is 6, the length of segment FG must be 6.

I hope this helps!

Point S lies between points R and T on .


If RT is 10 centimeters long, what is ST?

2 centimeters

4 centimeters

6 centimeters

8 centimeters

Answers

Answer:

the value of  line ST is 6 centimeters long

Step-by-step explanation:

The attached image in conjunction with the question is shown in the file below.

We can see from the RT segment that the equation given can be expressed as:

[tex]\mathbf{2x+3x = 10}[/tex]

so; if we solve for x ; we have ;

[tex]\mathbf{5x= 10}[/tex]

divide both sides by 5 ; we have:

[tex]\mathbf{\dfrac{5x}{5}= \dfrac{10}{5}}[/tex]

[tex]\mathbf{x=2}[/tex]

However ; the value of ST is represent by the information:

[tex]\mathbf{ ST = 3x}[/tex]

replcaing the value for x; we have :

[tex]\mathbf{ ST = 3*2}[/tex]

[tex]\mathbf{ ST = 6}[/tex]

Thus, the value of  line ST is 6 centimeters long

Answer:

C. 6 centimeters

May I have brainliest please? :)

This graph shows how much Lisa earns babysitting, compared with the
number of hours she works. Select the correct statement about the graph.
Lisa's Earnings
06
60
48
Amount Eamed ($)
30
18
12
O
4
Time (hours)
A
Cor con dollar chacorne the number of houreeho unrennen

Answers

Answer:

Step-by-step explanation:

For every hour she earns 12$

The correct statement about the graph is for each hour Lisa earns $12. This can be obtained by studying the graph.

How do we compare the money earned to number of hours ?

By observing the graph we can say that Earnings are directly proportional to Time.

Taking any point on the graph, for example (24,2) we can say that for 2 hours Lisa earns $24 ⇒ for 1 hour she earns $12 .

Hence the correct statement about the graph is for each hour Lisa earns $12.

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Can someone please help me???

Answers

Answer:

Stem    Leaf

2              8

3              4, 4

5              0, 4

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