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
Brilliant_brown [7]
3 years ago
5

For their craft project during the first week of camp, the campers used clothespins to make miniature rocking chairs. To make 90

chairs, they used 1,080 clothespins. How many clothespins did it take to make each chair?
Mathematics
1 answer:
fenix001 [56]3 years ago
5 0

1080 clothespins makes 90 chairs and we need to find out how many clothespins it takes to make 1 chair.

We can set up a proportion of the number of chairs to the number of clothespins because of the proportional relationship.

x is the number of clothes pins for 1 chair

\frac{90 chairs}{1080 clothespins} =\frac{1 chair}{x clothespins}

Cross multiply to get

90*x= 1080*1

Divide both sides by 90 to isolate x

x = 12 clothespins

It takes 12 clothespins to make 1 chair.


You might be interested in
A college chemistry instructor thinks the use of embedded tutors will improve the success rate in introductory chemistry courses
jeka57 [31]

Answer:

p_v = P(z>2.425) = 0.0076

The p value is a value in order to reject or not the null hypothesis. If the p value is higher than the significance level we FAIL to reject the null hypothesis otherwise we have enough evidence to reject the null hypothesis.

Step-by-step explanation:

Data given and notation

n=100 represent the random sample taken

X=152 represent the people passed the exam

\hat p = \frac{152}{200}= 0.76 estimated proportion of people report having texted while​ driving

p_o = 0.68 is the value that we want to test

\alpha represent the significance level

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the true proportion is higher than 0.68.:  

Null hypothesis:p \leq 0.68  

Alternative hypothesis:p>0.68  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.76 -0.68}{\sqrt{\frac{0.68(1-0.68)}{200}}}=2.425

Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The next step would be calculate the p value for this test.  

Since is a left right test the p value would be:  

p_v = P(z>2.425) = 0.0076

The p value is a value in order to reject or not the null hypothesis. If the p value is higher than the significance level we FAIL to reject the null hypothesis otherwise we have enough evidence to reject the null hypothesis.

5 0
4 years ago
Samir estimates the value of Three-fifths times 16.1. Which estimate is reasonable?
n200080 [17]

Answer: 9

Step-by-step explanation:

\frac{3}{5}  \times 16.1 = 9.66

6 0
3 years ago
What are the factors of 90?
Elina [12.6K]
1,2,3,6,9,10,15,30,45,90
8 0
3 years ago
Read 2 more answers
A crew must repave a road that is 3/8 miles long. They can repave 1/48 miles per hour. How long will it take the crew to repave
Anika [276]

Answer:

Step-by-step explanation:

3/8 miles long, 1/48 miles per hour

3/8 and 1/48 can have a common denominator, so you make 3/8 into 18/48 by multiplying both the numerator and denmoinator by 6.

18/48 miles long

1/48 per hour

divide: 18/48 divided by 1/48, which turns into 18/48 x 48/1 which equals 18

18 hours

4 0
3 years ago
[6] Jessica sold one third of her records and then bought 84 more. She now has 178 records. How many records did Jessica begin w
tia_tia [17]

Answer:

  • 141 records

Step-by-step explanation:

Let the initial number be x

<u>Sold 1/3x, and now has:</u>

  • x - 1/3x = 2/3x

<u>Bought 84 more and now got 178:</u>

  • 2/3x + 84 = 178
  • 2/3x = 94
  • x = 94 ÷ 2/3
  • x = 94 × 3/2
  • x = 141

Jessica had 141 records initially

7 0
3 years ago
Other questions:
  • How would you solve 3x + y = -14
    14·2 answers
  • Which point is an x-intercept of the quadratic function f(x)=(x-8)(x+9)
    8·1 answer
  • I’m really confused
    9·1 answer
  • each game cost 39.99 and there is a 4.85 shipping charge per order how much will it cost him to order any number of video games
    10·1 answer
  • How many different ways can 9 books be arranged on a bookshelf?
    8·1 answer
  • Can you plzz help me
    8·2 answers
  • Hey guys I need help what is 361.5 divided by 12
    5·1 answer
  • Who can do this rn maths
    13·1 answer
  • Please help!!!I’ll mark you as brainliest!!!
    10·2 answers
  • Make d the subject of the formula where d is positive<br> -5d + y = 6dc + 5a
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!