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
aleksandr82 [10.1K]
2 years ago
13

214 people used a public swimming pool. $1.50 for kids and $2.25 for adults. The receipt totaled to $390 How many children and h

ow many adults went the the public pool that day?
Mathematics
1 answer:
zysi [14]2 years ago
5 0

Answer:the number of kids that used the public pool that day is 122

the number of adults that used the public pool that day is 92

Step-by-step explanation:

Let x represent the number of kids that used the public pool that day.

Let y represent the number of adults that used the public pool that day.

214 people used a public swimming pool. This means that

x + y = 214

1.50 for kids and $2.25 for adults. The receipt totaled to $390. This means that

1.5x + 2.25y = 390 - - - - - - - - - -1

Substituting x = 214 - y into equation 1, it becomes

1.5x

1.5(214 - y) + 2.25y = 390

321 - 1.5y + 2.25y = 390

- 1.5y + 2.25y = 390 - 321

0.75y = 69

y = 69/0.75 = 92

Substituting y = 92 into x = 214 - y, it becomes

x = 214 - 92 = 122

You might be interested in
Can someone please help im struggling
NNADVOKAT [17]

Answer:

81 units³

Step-by-step explanation:

V = Length x Widht x Height

= 9 x 3 x 3

= 81 units³

5 0
3 years ago
The Paralyzed Veterans of America is a philanthropic organization that relies on contributions. They send free mailing labels an
lions [1.4K]

Answer:

Confidence interval:  (0.04649,0.04913)

Step-by-step explanation:

We are given the following in the question:

Sample size, n =  100,000

Number of people who donated, x = 4781

\hat{p} = \dfrac{x}{n} = \dfrac{4781}{100000} = 0.04781


95% Confidence interval:

\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting the values, we get:

0.04781
\pm 1.96(\sqrt{\dfrac{0.04781
(1-0.04781
)}{100000}})\\\\=0.04781
\pm 0.00132\\\\=(0.04649,0.04913)

is the required 95% confidence interval  for the true proportion of their entire mailing list who may donate.

3 0
3 years ago
Please help. I need to raise my grade!
scoundrel [369]
The answer is the last one 7/8 x -3/4 =6
7 0
3 years ago
Analyze and sketch the graph of
Liono4ka [1.6K]

Answer:

Step-by-step explanation:

Please find the attached excel file.

Download xlsx
5 0
3 years ago
Identify coordinate point A. <br><br> (0, 2)<br> (6, 7) <br> (1, 5)<br> (7, 3)
Novosadov [1.4K]
I need to see the image
6 0
2 years ago
Read 2 more answers
Other questions:
  • Solve the following proportion for X
    13·1 answer
  • Plot -1 + i in the complex plane
    15·1 answer
  • Felix is going to paint a wall. The wall is 23 feet long by 8 feet high. A gallon of paint costs $11 and covers 320 square feet
    15·1 answer
  • 15 POINTS AND BRAINLIEST ANSWER!!
    7·2 answers
  • C - 1.5+6.8=0.6 what is x
    12·2 answers
  • X= y-2 <br> 2x+3y=21<br> Solution_______
    8·1 answer
  • Question is in the picture, please help me
    10·1 answer
  • Click on the volume of this cube.
    13·2 answers
  • Simplify the expression
    15·2 answers
  • What is 5829×3782?<br> I will give you brainliest for right answer
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!