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
Fed [463]
3 years ago
12

se vendieron 144 boletos. 2 pesos por adulto y un peso por niño, si se gastaron 207 pesos cuantos boletos de adulto se vendieron

y cuantos boletos de niño?​
Mathematics
1 answer:
natulia [17]3 years ago
5 0

Answer:

Se vendieron 81 boletos de niños y 63 boletos de adultos.

Step-by-step explanation:

La cantidad de boletos vendidos es igual a:

144 = a + n   (1)

En donde <em>a </em>es por adultos y <em>n</em> por niños

A su vez, el dinero gastado equivale:

207 = 2*a + 1*n   (2)

Resolviendo la ecuación (1) para <em>a:</em>

a = 144 - n   (3)

Introduciendo (3) en la ecuación (2) tenemos:

207 = 2*(144 - n) + n

n = 81

Ahora podemos calcular el numero de boletos de adultos vendidos introduciendo <em>n</em> en la ecuación (3):

a = 144 - n = 144 - 81 = 63

Entonces, se vendieron 81 boletos de niños y 63 boletos de adultos.  

Espero que te sea de utilidad!      

You might be interested in
You need to fill a football with air to play with it. You know that your pump expels air at speed of 8.2 ft/s. The needle of you
abruzzese [7]
Jjjjjjjjhjjjjhhhhjhhjjjjjhhhhhhh
8 0
3 years ago
Help can someone help me on their question just explain it well ♡ so that I understand it ;) ​
Vitek1552 [10]
Ohh come se diceee uhhh i dont know the answer :)
8 0
3 years ago
1\4 fractions division
scoundrel [369]
Not sure what the question is
But 1/4 as a decimal gives us 0.25
4 0
3 years ago
It is a collection or set of units or
tatyana61 [14]

Answer:

Population.

Step-by-step explanation:

Population can be defined as a collection or set of units or entities from whom we got the data.

This ultimately implies that, a population is the larger set from which other units can be picked from.

Hence, a population is an entire collection of outcomes or objects from which we can obtain or collect data. For example, the number of new born babies in a hospital, a country and the total number of football players in a soccer league.

Population = Movies.

Subset (sample) = comedy movies, horror movies, romance movies, and action movies.

3 0
3 years ago
A recent study of 26 city residents showed that the time they had lived at their present address has a mean of 10.3 years with t
svetlana [45]

Answer:

The 95% confidence interval is  9.15<  \mu < 11.45

Step-by-step explanation:

From the question we are told that

     The sample size is  n =  26

      The mean is  \= x =  10.3

       The standard deviation is  s =  3

From the question we are told the confidence level is  95% , hence the level of significance is    

      \alpha = (100 - 95 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally the margin of error is mathematically represented as  

      E = Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }

=>   E =  1.96 *  \frac{3}{\sqrt{26} }

=>   E = 1.1532

Generally 95% confidence interval is mathematically represented as  

      \= x -E <  \mu <  \=x  +E

=>   10.3  -1.1532 <  \mu < 10.3  +  1.1532

=>    9.15<  \mu < 11.45

7 0
3 years ago
Other questions:
  • A policy for $100-deductible collision insurance for a 3-year-old full-size car with a Class 2A driver,
    9·1 answer
  • Help ? I don’t know how to do it
    8·1 answer
  • Rewrite this polynomial in terms of its simplest factors using the appropriate method: x3 + x2 − 6x.
    14·2 answers
  • A drawing has a scale of 1:40.
    13·2 answers
  • X2 + 4x -9 = (x + a)? +b<br> Find the value of a and the value of b.<br> a =<br> b=<br> ?
    8·1 answer
  • ASAP please help this is a test 20 points ????
    15·2 answers
  • Is this relation a function? Explain WHY?<br><br> (0,3), (1,1), (2,1), (3,0)
    9·2 answers
  • F(x) = 2 sin x- tanx is not a sinusoid.
    15·2 answers
  • Coach Wallace wants to raise $1,500 for swim club. His goal is to raise $25 a day (d).
    14·1 answer
  • a total of 695 tickets were sold for the school play. They were either adult or student tickets. There was 55 fewer students tic
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!