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
DochEvi [55]
3 years ago
6

What is the length of line BC , rounded to the nearest tenth?

Mathematics
1 answer:
GuDViN [60]3 years ago
6 0
Hi I Think The Answer is:

31.2 units


Hope This Helped

You might be interested in
Health insurers are beginning to offer telemedicine services online that replace the common office visit. A company provides a v
Veronika [31]

Answer:

\text {CI} = (60.54, \: 81.46)\\\\

Therefore, we are 95% confident that actual mean savings for a televisit to the doctor is within the interval of ($60.54 to $81.46)

Step-by-step explanation:

Let us find out the mean savings for a televisit to the doctor from the given data.

Using Excel,

=AVERAGE(number1, number2,....)

The mean is found to be

\bar{x} = \$71  

Let us find out the standard deviation of savings for a televisit to the doctor from the given data.

Using Excel,

=STDEV(number1, number2,....)

The standard deviation is found to be

 s = \$ 22.35

The confidence interval is given by

\text {confidence interval} = \bar{x} \pm MoE\\\\

Where the margin of error is given by

$ MoE = t_{\alpha/2}(\frac{s}{\sqrt{n} } ) $ \\\\

Where n is the sample of 20 online doctor visits, s is the sample standard deviation and t_{\alpha/2} is the t-score corresponding to a 95% confidence level.

The t-score is given by is

Significance level = α = 1 - 0.95 = 0.05/2 = 0.025

Degree of freedom = n - 1 = 20 - 1 = 19

From the t-table at α = 0.025 and DoF = 19

t-score = 2.093

So, the margin of error is

MoE = t_{\alpha/2}(\frac{s}{\sqrt{n} } ) \\\\MoE = 2.093\cdot \frac{22.35}{\sqrt{20} } \\\\MoE = 2.093\cdot 4.997\\\\MoE = 10.46\\\\

So the required 95% confidence interval is

\text {CI} = \bar{x} \pm MoE\\\\\text {CI} = 71 \pm 10.46\\\\\text {CI} = 71 - 10.46, \: 71 + 10.46\\\\\text {CI} = (60.54, \: 81.46)\\\\

Therefore, we are 95% confident that actual mean savings for a televisit to the doctor is within the interval of ($60.54 to $81.46)

7 0
3 years ago
What is the distance between (1, 3) and (5, 8)
katovenus [111]
I think you’d do (5,8) - (1,3) to get (4,5)
8 0
3 years ago
Read 2 more answers
There is a 15% discount on all items in a store. You buy a $12 shirt and $45 jeans. What will be your total cost?
Nina [5.8K]

Answer:

The total cost of the shirt and Jean's together with a 15% discount would be $48.45.

Step-by-step explanation:

if you at 12 and 45 you get 57 now if you multiply that by .15 which would be 15% you would get $48.45.

6 0
3 years ago
Read 2 more answers
If a pound of bread is worth 1.75 and a orange is worth 0.50 per pound. How many pounds of oranges have an equivalent cost to 3
Alexus [3.1K]

Answer:

  C.  10.5 pounds

Step-by-step explanation:

The worth of 3 loaves of bread is 3 times that of one loaf:

  3 × 1.75 = 5.25

You want the number of pounds of oranges (p) at 0.50 per pound that has this same worth:

  0.50p = 5.25

  p = 5.25/0.50 = 10.50

10.5 pounds of oranges have an equivalent cost to 3 loaves of bread.

5 0
3 years ago
Which deposit earns more interest, $250 at 6% per year, or $400 at 4% per year? show how you know.
cestrela7 [59]

Answer:

$400 at 4% per year

Step-by-step explanation:

because then you put 400 and use the formula of interest you can see which gives bigger

7 0
2 years ago
Read 2 more answers
Other questions:
  • Sean answered 18 of 20 quiz questions correctly. What percent of the quiz questions did Sean answer correctly?
    10·2 answers
  • What is y=x+2 graphed
    15·1 answer
  • I need help finishing a question. I used the explanation function on the program, but it didn't specify what to do to get the fi
    9·2 answers
  • A farmer sells 7.7 kilograms of apples and pears.3/5 of this weight is apples, and the rest is pears. How many kilograms of pear
    14·1 answer
  • Select the sample most representative of the population of interest. The Director of Food Operations at a small college campus w
    13·1 answer
  • {2y-4}=12 what are the solutions?
    9·2 answers
  • EMERGENCY
    11·2 answers
  • What is the missing fraction for the equation? <br> 9/10 + ?/? = 99/100
    15·1 answer
  • Asking for a friend. Someone, please help out. Will give 15 points for it and brainliest when possible.
    7·1 answer
  • 15 divided by 0.3 + 6 divided by 0.02
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!