1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mazyrski [523]
3 years ago
14

7) Una epidemia mató los 3/7 de las vacas de un granero y de las que le quedaron vendió 1/2. Si todavía le quedaron 24 vacas, ¿C

uántas vacas tenía al principio, ¿cuántas murieron y cuántas vendió?
Mathematics
1 answer:
4vir4ik [10]3 years ago
8 0

Answer:

Habían inicialmente 84 vacas. Murieron 36 vacas. 24 vacas fueron vendidas.

Step-by-step explanation:

Sea x la cantidad inicial de vacas. De acuerdo con el enunciado, murieron tres séptimos de la cantidad inicial y la mitad de ese remanente fue vendida, quedando 24 vacas. Matemáticamente, tenemos las siguientes operaciones:

Cantidad inicial de vacas

x = \frac{24}{\left(1-\frac{3}{7} \right)\cdot \left(1-\frac{1}{2} \right)}

x = 84

Habían inicialmente 84 vacas.

Cantidad de vacas muertas

y = \frac{3}{7}\cdot x

y = 36

Murieron 36 vacas.

Cantidad de vacas vendidas

z = \left(1-\frac{3}{7} \right)\cdot \frac{1}{2}\cdot x

z = 24

24 vacas fueron vendidas.

You might be interested in
The sum of two numbers is
kogti [31]
Set up the equation
x = the smaller number
x + 15 = the larger number

x + x + 15 =39
solve for x
this will be the smaller number
add 15 to get the larger number
5 0
3 years ago
Read 2 more answers
PLS HELP ILL GIVE U BRAINLIST
SCORPION-xisa [38]
<h2>Answer:</h2>

B. |y| = 1.6

<h2>Step-by-step explanation:</h2>

A sketch of the vector is attached to this response.

As shown, the vector lies on the second quadrant and its horizontal and vertical components are given by x and y respectively.

Where;

|x| = v cos θ              -----------------(i)

|y| = v sin θ               -----------------(ii)

and

v = magnitude of the vector = 2.5km/hr

θ = angle that the vector makes with the +x axis = 90° + 50° = 140°

<em>To get the magnitude of the vector's vertical component</em>

<em>Substitute these values into equation(ii) as follows;</em>

|y| = 2.5 sin 140°

|y| =  2.5 x 0.6428

|y| = 1.607

|y| ≅ 1.6 km/hr

Therefore, the vertical component of the vector has a magnitude of 1.6 km/hr.

 

4 0
3 years ago
Substrac the quotient of 70 divided by 2 from 60
guajiro [1.7K]
70/2=35 (this is the quotient)
60-35=25
6 0
3 years ago
Read 2 more answers
John is going to draw two cards from
natulia [17]
4/53. Hope this hewps uwu
4 0
2 years ago
Can someone please help me and solve this for me 8x+3=2x
natita [175]
12idintkownuuuuuuuuuuu
8 0
3 years ago
Read 2 more answers
Other questions:
  • How do I solve for y?
    8·1 answer
  • Need help here please :)
    11·1 answer
  • The capital of Australia was located
    5·1 answer
  • Could someone pls help pls ASAP!!!it’s due by tonight pls helppp
    14·1 answer
  • I need to solve for x. The interior angles are 30 and 4x+2. The exterior angle is 8+6x.
    12·2 answers
  • What is the effect on the graph of f(x)=1xf(x) = \frac{1}{x}f(x)=x
    5·1 answer
  • What kind of relationship does the following scatter plot show?
    13·2 answers
  • Andre is preparing for the school play. He needs to paint a cardboard box to look like a dresser. The box is a rectangular prism
    8·1 answer
  • Dana is playing a game where she loses 75 points every time she rolls an even number. She starts with 0 points. Then she rolls a
    5·1 answer
  • Find the y-intercept and the slope of the line.<br> 6x-2y=5
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!