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
Alex73 [517]
3 years ago
7

How can you find a unit rate when given a rate?‍♀️‍♀️

Mathematics
2 answers:
Step2247 [10]3 years ago
6 0
To find a unit rate you must divide the amount that the rate represents and divide it.
Ex. Rate- 4 Amount- 2
2 divided by 4
Unit Rate equals 0.5

Ex. If a girl is driving for 4 hours and and she gets 200 miles, how many mph is she driving for?
If we know the mph is the same as a unit rate, we divided 200 by 4 and get 50. Her mph is 50.
Misha Larkins [42]3 years ago
5 0
14/1 or 14 that could be your answer good luck:)
You might be interested in
Mr. and Mrs. Simpson went to two movies. The first movie lasted 2 1− 3hours and the second one lasted 1 4− 5hours. How much long
Morgarella [4.7K]

Answer:

11

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Plz answer this now anyone
bearhunter [10]

answer is f hope u like it plz mark me as brainliest plzzzzzzzzzzzzz

5 0
2 years ago
2. A marketing firm is trying to estimate the proportion of potential car buyers that would consider
Maurinko [17]

Answer:

a. The number of people that should be in the pilot study are 600 people

b. The point estimate is 0.62\overline 6

c. At 95% confidence level the true population proportion of potential car buyers of hybrid vehicle is between the confidence interval (0.588, 0.6654)

d. Two ways to reduce the margin of error are;

1) Reduce the confidence interval

2) Use a larger sample size

Step-by-step explanation:

a. The given parameters for the estimation of sample size is given as follows;

The margin of error for the confidence interval, E = 4% = 0.04

The confidence level = 95%

The sample size formula for a proportion as obtained from an online source is given as follows;

n = \dfrac{Z^2 \times P \times (1 - P)}{E^2}

Where, P is the estimated proportions of the desired statistic, therefore, we have for a new study, P = 0.5;

Z = The level of confidence at 95% = 1.96

n + The sample size

Therefore, we have;

n = \dfrac{1.96^2 \times 0.5 \times (1 - 0.5)}{0.04^2} = 600.25

Therefore, the number of people that should be in the pilot study in order to meet this goal at 95% confidence level is n = 600 people

b. The point estimate for the population proportion is the sample proportion  given as follows;

\hat p = \dfrac{x}{n}

Where;

x = The number of the statistic in the sample

n = The sample size

From the question, we have;

The number of potential car buyers, n = 600

The number of respondent in the sample that indicated that they would consider purchasing a hybrid, x = 376

Therefore, the point estimate, for the proportion of potential car buyers that would consider buying a hybrid vehicle, \hat p = 376/600 = 0.62\overline 6

c. The confidence interval for a proportion is given as follows

CI=\hat{p}\pm z\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

Therefore, we get;

CI=0.62 \overline 6\pm 1.96\times \sqrt{\dfrac{\hat{0.62 \overline 6}\cdot (1-\hat{0.62 \overline 6})}{600}}

C.I. ≈ 0.6267 ± 0.0387

The 95% confidence interval for the true population proportion of potential buyers of hybrid vehicle, C.I. =  (0.588, 0.6654)

d. The margin of error is given by the following formula;

MOE_\gamma = z_\gamma  \times \sqrt{\dfrac{\sigma ^2}{n} }

Where;

MOE_\gamma = Margin of error at a given level of confidence

z_\gamma = z-score

σ = The standard deviation

n = The sample size

Therefore, the margin error can be reduced by the following two ways;

1) Reducing the confidence interval and therefore, the z-score

2) Increasing the sample size

6 0
2 years ago
A tree casts a shadow that is 24 feet in length. If the angle of elevation is 30 degrees, which of the following best represents
emmainna [20.7K]

Answer:

The answer is D) 13.9

Step-by-step explanation:

Since the angle of elevation is adjacent to the length of 24, than to find the height you have to use tangent. so you take your calculator in DEGREES mode and enter tan(30) which gives you =0.5773502692... than you would multiply by 24 which gives you the height =13.8564.....

Sorry if I wasn't specific enough, ask if you want more help. I am sure this is the right answer

4 0
3 years ago
Read 2 more answers
I needdddd helppppppppp
Aneli [31]

Answer:

B

Step-by-step explanation:

sum of angles in a triangle is 180

6n +1 +108+9n-4=180

15n = 180 -105

15n = 75

n= 75/15 = 5

5 0
2 years ago
Other questions:
  • A set of equations is given below:
    6·2 answers
  • How exactly do i name the 4 ways?
    14·1 answer
  • Complete the following definition.
    7·1 answer
  • A farmer is painting a new barn. He will need to calculate the surface area of the barn to purchase the correct amount of paint.
    10·1 answer
  • Hii guys I need help with this I took a screenshot of it.
    6·1 answer
  • Which of the following is a description of the data with a correlation coefficient of 0.1?
    12·1 answer
  • What is the value of x in the figure below <br><br> Need help before 8:56
    10·1 answer
  • Lamar uses his credit card to purchase a new video game system for $375.19. He can pay off up to $175 per month. The card has an
    6·1 answer
  • WILL GIVE BRAINLIEST FOR THE RIGHT ANSWER!!
    10·1 answer
  • What is the distributive property of32 +44 =
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!