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
Rufina [12.5K]
1 year ago
9

Swimming Pool On a certain hot summer's day, 174 people used the public swimming pool. The daily prices are $1.50 for children a

nd $2.25 for adults. The receipts for admission totaled $341.25. How many children and how many adults swam at the public pool that day?
Mathematics
1 answer:
djverab [1.8K]1 year ago
6 0
\begin{gathered} C+A=174 \\ 1.5C+2.25A=341.25 \end{gathered}

You might be interested in
A trapezoid has a perimeter of 14 feet. What will the perimeter be if each side length is increased by a factor 7? 21 feet 98 fe
natka813 [3]

Answer:

Correct choice is B

Step-by-step explanation:

Let a, b, c and d be the trapezoid's sides lengths.

The perimeter of the trapezoid is the sum of all sides lengths, thus,

a+b+c+d=14\ ft.

If each side length is increased by a factor 7, then new sides have lengths 7a, 7b, 7c and 7d. The perimeter of new trapezoid is

7a+7b+7c+7d.

Use the distributive property for this expression:

7a+7b+7c+7d=7(a+b+c+d).

Since a+b+c+d=14\ ft, then

7a+7b+7c+7d=7(a+b+c+d)=7\cdot 14=98\ ft.

7 0
3 years ago
Read 2 more answers
Jessica uses a 20% off coupon when she buys a new camera. The original price of the camera was $150. How much money does Jessica
Luden [163]

Answer:

30

Step-by-step explanation:

150x .2= 30

3 0
3 years ago
Read 2 more answers
3x^2+kx=-3 What is the value of K will result in exactly one solution to the equation?
Scorpion4ik [409]

Answer:

For k = 6 or k = -6, the equation will have exactly one solution.

Step-by-step explanation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = (x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

If \bigtriangleup = 0, the equation has only one solution.

In this problem, we have that:

3x^{2} + kx + 3 = 0

So

a = 3, b = k, c = 3

\bigtriangleup = b^{2} - 4ac

\bigtriangleup = k^{2} - 4*3*3

\bigtriangleup = k^{2} - 36

We will only have one solution if \bigtriangleup = 0. So

\bigtriangleup = 0

k^{2} - 36 = 0

k^{2} = 36

k = \pm \sqrt{36}

k = \pm 6

For k = 6 or k = -6, the equation will have exactly one solution.

3 0
3 years ago
What is the relationship between the mean and the
tigry1 [53]

Answer:

5

Step-by-step explanation:

7 0
3 years ago
Suppose that, based on a sample, the 99.7% confidence interval for the mean of a population is (59,95). What is the mean of the
Georgia [21]

Answer:

mean = 77

Step-by-step explanation:

We have a confidence interval of (59, 95) with a confidence of  99.7 percent


99.7 is 6 standard deviations from the mean, 3 on each side of the mean

mean - 3 sigma = 59

mean + 3 sigma = 95

We can use elimination to eliminate sigma.  Add these equations together

mean - 3 sigma = 59

mean + 3 sigma = 95

---------------------------------

2 * mean = 154

Divide each side by 2

2 * mean/2 = 154/2

mean = 77

4 0
4 years ago
Other questions:
  • How to solve problem
    8·1 answer
  • NEED HELP WITH A MATH QUESTION
    7·1 answer
  • Suppose that you are standing 150 feet from a building and the angle of elevation to the top of the building is 42°. What is the
    15·1 answer
  • What's 18 divided by 5634❤️Pls help
    11·2 answers
  • Anyone know this?! due soon
    8·1 answer
  • Milligrams would you administer?
    10·1 answer
  • In April, The Kazbaas drove 760 miles in their tour van.
    12·1 answer
  • There is two questions
    12·2 answers
  • HELP PLEASE THANK U BAES
    11·1 answer
  • 4(2x-3)=0.2(x+5)+5.75
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!