En una librería se venden novelas a 16 euros y guías de viaje a 10 euros. Si hoy se han vendido 37 libros en total con una recaudación de 508 euros, calcula el número de ejemplares vendidos de cada tipo.

Answers

Answer 1

Answer:

En la librería se vendieron 23 novelas y 14 guías de viaje.

Step-by-step explanation:

Con la información proporcionada puedes plantear las siguientes ecuaciones:

x+y=37 (1)

16x+10y=508 (2), donde:

x es el número de novelas vendidas

y es el número de guías de viaje vendidas

Primero, puedes despejar x en (1):

x=37-y (3)

Ahora, debes reemplazar (3) en (2) y despejar y:

16(37-y)+10y=508

592-16y+10y=508

592-508=16y-10y

84=6y

y=84/6

y=14

Después, debes reemplazar el valor de y en (3) para encontrar el valor de x:

x=37-14

x=23

De acuerdo a esto, la respuesta es que en la librería se vendieron 23 novelas y 14 guías de viaje.


Related Questions

PLZ ANSWER THIS I CANT FIGURE OUT THE SECOND ONE

(INSTANTANEOUS ROC)

I will give you brainiest if you answer it right

Answers

Answer:

Step-by-step explanation:

The first one is actually 0 I think. The instantaneous ROC at x=1 should also be 0. The last one should be correct.

Basically, the ROC for the first one is 0 because the y value at the start and end of the interval is the same, so the change is the same. However, for the instantaneous ROC at x = 0, you look at the graph and realize that if you find the derivative at that point, it is 0.

HELPP ITS DUE IN 10 MINUTES!!!!!

Answers

Answer:

a is less than or equal to 35 since 35 is the highest value that can be gotten

HELP PLZ BRAINIEST TO WHOEVER RIGHT

Answers

Answer:

five-number summary

Step-by-step explanation:

Quick maths question please help

Answers

Answer:

U have to add it all up

10+4+5+8+12=39..

Answer:

You have to break it up by two

Shape 1 : 10cm x 8cm x 7cm

Shape 2: 4cm x 5cm x 8cm

I wish I can

if the mean of 12,16,22,X 28 is 19.6 find X

Answers

Answer:

20

Step-by-step explanation:

A data is given and the mean of data is 19.6 .The data is ,

12 , 16 , 22 , x , 28 .

We know that the mean is sum of observations divided by Total number of observations . So that ,

⇒ 12 + 16 + 22 + x + 28/ 5 = 19.6

⇒ 78+x/5 = 19.6

⇒ 19.6 × 5 = 78 + x

⇒ 78 + x = 98

⇒ x = 98 - 78

⇒ x = 20

Hence the value of x is 20 .

what is the difference between 479,310 and 214,991?

Answers

264, 319 is the answer if you subtract 479, 310 from 214,991

Answer:

264,319

Step-by-step explanation:

A difference is a subtraction problem.

Subtract 214,991 from 479,310.

479,310 - 214,991 = 264,319

.
In the hands of someone with harmful intentions, how can analogies prove to be dangerous tools?
A)Analogies can create long-lasting confusion that prevents people from making decisions.
B)Analogies make significant connections seem far less powerful than they actually are.
C)Analogies meant to persuade or influence people are often disguised as explanations.
D)Analogies, even weak and misleading ones, can be powerful tools of persuasion.

Answers

Answer:

I believe, its D.

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Help me please! Write the measure of angles a, b, c, d, e, f, and g for the figure below.
I need help and answers. NO LINKS PLEASE! Thank you! I'll give 10 points and brainliest.

Answers

Answer:

a=55

b=55

c=125

d=125

e=55

f=55

g=125

Step-by-step explanation:

Answer:

∠a = 55°, ∠b = 55°, ∠c = 125°, ∠d = 125°, ∠e = 55°, ∠f = 55°, ∠g = 125°

Step-by-step explanation:

straight lines form 180°:

125° + ∠a = 180°

=> ∠a = 55°

verticle angles are congruent:

∠c = 125°

∠b ≅ ∠a => ∠b = 55°

When two line are parallel:

same side interior angles are congruent:

∠g ≅ ∠c => ∠g = 125°

∠e ≅ ∠a => ∠e = 55°

∠d = 125°

∠ f ≅ ∠b => ∠f = 55°

You invest $500 in an account that pays 6% interest compounded continuously. How
much will be in the account after 6 years?

Answers

Answer:  716.66 dollars

=====================================================

Explanation:

We'll apply this formula

A = P*e^(r*t)

where,

A = account balance after t yearsP = initial deposit, aka principale = special constant roughly equal to 2.718 but it goes on forever without a pattern; it's better to let the calculator handle this value rather than type the decimal digits in.r = annual interest rate in decimal formt = number of years

In this case, we have

P = 500r = 0.06t = 6

Again we won't type "2.718..." for 'e', and we'll just type it into the calculator as shown below. That way the calculator can handle the digits instead.

So...

A = P*e^(r*t)

A = 500*e^(0.06*6)

A = 716.66470728026

A = 716.66 dollars is the final answer

Find the perimeter of the square. (hint : make one side = to the other side to find y. Remember, you are finding the perimeter)

Answers

Step-by-step explanation:

[tex]5y = 4y + 3 \\ y = 3 \\ p = 4 \times a = 4 \times 3 = 12[/tex]

Which equation has the solution x = 2?

A 2x-3=19

B 3x+2=8

C 4x-4=-4

D 5x+1=10

Answers

Answer:

The answer is B.

Step-by-step explanation:

You can solve this problem by plugging in 2 for x in the given equations.

2(2) - 3 = 19 is false

3(2) + 2 = 8 is true

4(2) - 4 = -4 is false

5(2) + 1 = 10 is false

solve for k. -5/6k = -10

Answers

Answer:

k = 12

Step-by-step explanation:

-5/6k = -10

Multiply both sides by 6k

-5/6k x 6k= -10 x6k

simplify

-5 = -60k

Switch sides

-60k = -5

Divide both sides by -60

-60k/-60 = -5/-60

Simplify to get your answer of

1/12 or 12

If you have any questions revolving around this topic,feel free to ask me :)

Which expression is equivalent to 2(3g - 4) - (8g + 3)?

Answers

Answer:

Step-by-step explanation:

6g - 8 - 8g - 3

-2g - 11

Answer:

-2g - 11

Step-by-step explanation:

2(3g - 4) - (8g + 3)

Use the distributive property to multiply 2 by 3g - 4.

6g + 2(-4) - (8g + 3)

6g - 8 - (8g + 3)

Find the opposite of 8g + 3.

6g - 8 - 8g - 3

Combine like terms.

-2g - 8 - 3

Subtract 3 from -8 to get -11.

-2g + 11

The expression equivalent to 2(3g - 4) - (8g + 3) is -2g - 11.

A triangular prism has a height of 9 meters and a triangular base with the following dimensions.

What is the volume of the prism?

- 420 m^3

- 288 m^3

- 324 m^3

- 432 m^3

Answers

Answer:

V = 432 m³

Step-by-step explanation:

The volume (V) of a prism is calculated as

V = Ah ( A is the area of the base and h the height )

A = [tex]\frac{1}{2}[/tex] bh ( area of triangular base, with b the base, h the perpendicular height)

Here b = 16 and h = 6 , then

A = [tex]\frac{1}{2}[/tex] × 16 × 6 = 8 × 6 = 48 m²

Then

V = 48 × 9 = 432 m³

What speed would a plane average on a trip
of 4000 miles that took 6 hours?
(A) 150.0 miles per hour
(B) 666.6 miles per hour
(C) 366.6 miles per hour
(D) 1500.0 miles per hour

Answers

Answer:

B) 666.6 miles per hour

Step-by-step explanation:

To solve this question, divide the 4000 miles with the 6 hours to get an answer in units of X miles per hour.

4000 miles/6 hours = 666.6 miles per hour

The order in which conditions are combined does not matter in a _____.

permutation
combination
sequence
series

Answers

It answer is a combination

Answer:

combination!!

I need help fast... Identify the scatter plots as linear association, nonlinear association,or no association.​

Answers

Answer:

1 non linear

2 linear

3 no association

4 linear

5 non linear

6 no association

I will answer any questions you have

Answer:

linear: Bottom left, and middle top

nonlinear: Bottom middle, top left

no association: top right, bottom right.

Step-by-step explanation:

Linear is like a line it stays close together like a line of ants

nonlinear is curves- like a snake

no association is spread out, like a paint splatter

in the figure above, the area of square ABCE=x^2 and DC=y. What is the area of triangle AED?

Answers

Answer:

The area of triangle AED = (x^2-xy)/2

Step-by-step explanation:

Mathematically, the area of a square is the product of its side lengths

Thus, if the area is x^2; then the side of the square measures x

So each of the side of the square has a measure x units

Now, for the base of the square;

EC = ED + DC

x = ED + y

ED = x - y

Mathematically, the area of a triangle is the product of the base and the height of the triangle divided by 2

The height here is x and the base is (x-y)

We have this as;

Area of triangle AED =

1/2 * x * (x-y)

= (x(x-y))/2

= (x^2-xy)/2

The lengths of three ropes are 4 : 5 : 9. If the length of the shortest rope is 20 cm, find the length of the longest rope

Answers

Answer:

Don’t quite me on it, but 45cm?

Explanation:

Well, if the shortest rope (4) is only 20cm, it’s about 5cm per length (?)

So, if you follow that pattern the longest (9) would be 45cm.
The answer is 45
If 20/4 = 5
Then 9x5 = 45

Solve the triangle, round answers to the nearest tenth.

Answers

Step-by-step explanation:

to get DE nd also EF u can use the cosine rule since two angles and a side has been given

and to get the angle at D since we know ∆=180 then u add up the angles given then u subtract from 180

What is the name?

Help please

Answers

Answer:

Tangent

Step-by-step explanation:

GE has only one point of contact with the circle at F

The line GE is therefore a tangent

Answer:

Tangent

Step-by-step explanation:

i took it

Grant is making hot dogs for a picnic. Hot dogs come in packages of 8. Hot dog buns come in packages of 12. What is the least number of packages of hot dogs and packages of hot dog buns, can Grant buy so that he has the same number of servings of each?

Answers

Answer:

6 hot dog packages and 4 hot dog buns packages.

Step-by-step explanation:

12 x 4 = 48

8 x 6 = 48

Answer:

3 hot dogs and 2 buns

Step-by-step explanation:

Multiply hot dogs until you get a multiple of 12 for this the lowest common multiple is 24

Plz need help it’s due today

Answers

A-no
B-yes
C-yes
D- yes

What is the solution of 3x + y = 9 and 3x - 5y = 15?​

Answers

Answer:

(10/3, -1)  

Step-by-step explanation:

So there are two different ways.  

First you could address for y and fitting it into the number cruncher. one condition for y1 and another for y2. At that point go second follow and press 5 and afterward press enter multiple times to discover the convergence.  

the subsequent path is to tackle by hand. I would recommend address the primary condition for y and attachment the condition tackled for y into the other condition. so y = - 3x + 9 and 3x-5y=15. At that point you could do 3x - 5(- 3x+9) = 15. At long last address for x and plug in x into the two conditions to check whether you get a similar y esteem.  

The appropriate response ought to be (10/3, - 1)

Answer:

x = 3 1/3, x = -1.

Step-by-step explanation:

3x + y = 9

3x - 5y = 15

Subtract second equation from the first to eliminate the 3x :

3x - 3x + y - (-5y) = 9 - 15

6y = -6

y = -1.

Plug y = -1 in first equation:

3x + -1 = 9

3x =  10

x = 10/3 = 3 1/3.

can yall help me smart people

Answers

Answer:

D y>0

Step-by-step explanation:

(0,∞)

What is the slope of the line?

Answers

Answer:

The slope is 1/3

Step-by-step explanation:

you go up one whole unit and to the right 3 whole units.

Answer:   Its Just a line  explaning  how it is long

Step-by-step explanation:

the line rpresents all

Please answer the question below fully will mark brainliest

Answers

Answer:

que es eso

Step-by-step explanation:

fuhwiheirj lo siento

Three children shared some
sweet in the ratio of their ages.
The chilren are 4, 7, and 9 years
old. The oldest child gets 54
sweets
How much sweets did they have
altogether:​

Answers

Answer:

120

Step-by-step explanation:

4x, 7x, 9x

9x=54

we need to find 4x+7x+9x

9x=54⇒x=6

4x+7x+9x=20x=20×6=120

Answer:

120 sweets

Step-by-step explanation:

4:7:9

Total Parts = 4+7+9=20

Oldest(9)= 9/20

9/20P= 54 Sweets

Total Sweets = 54/ (9/20) =120

Ishaan is 3 times as old as Christopher. He is also 14 years older than Christopher. How old is Christopher?

Answers

Answer:

He is 42 years old.

Step-by-step explanation:

3 x 14 = 42

The 3 is for how many times older Ishaan is.

The 14 is how many years older than Christopher Isahaan is.

If you need to find Isaahan's age, just multiply 2 x 14, which is 28.

Isahaan is 28 years old, and Christopher is 42 years old.

Glad I could help!

-Vibilities

Let x and y be inversely related. If x is 5 when y
is 6, find y when x is 3.

Answers

Answer:

y=10

Step-by-step explanation:

x=k/y

constant of proportionality

k=xy

k=5*6

k=30

therefore x=30/y

if x=3 y=?

y=30/3

y= 10

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