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
DaniilM [7]
3 years ago
14

THIS IS SOOOO URGENT! PLEASE!

Mathematics
2 answers:
tino4ka555 [31]3 years ago
8 0

Answer:

16

Step-by-step explanation:

the radius is 4, square that = 16.

tatyana61 [14]3 years ago
6 0

Answer:

\left(x-3\right)^{2}+\left(y-2\right)^{2}=16

Step-by-step explanation:

I graphed the points on the graph below to find the equation of the circle.

You might be interested in
A billing company that collects bills for​ doctors' offices in the area is concerned that the percentage of bills being paid by
omeli [17]

Answer:

1) A. H0: p = 0.30

HA: p not equal to 0.30

2) A. The Independence Assumption is met.

C. The Randomization Condition is met.

D. The Success/Failure Condition is met.

3) Test statistic z = 2.089

P-value = 0.0367

4) C. Reject H0. There is sufficient evidence to suggest that the percentage of bills paid by medical insurance has changed.

Step-by-step explanation:

1) This is a hypothesis test for a proportion.

The claim is that there is a significant change in the percent of bills being paid by medical​ insurance.

As we are looking for evidence of a difference, no matter if it is higher or lower than the null hypothesis proportion, the alternative hypothesis is defined by a unequal sign.

Then, the null and alternative hypothesis are:

H_0: \pi=0.3\\\\H_a:\pi\neq 0.3

2) Cheking the conditions:

The independence assumption and the randomization condition are met as the bills were selected randomly from the population.

The 10% condition can not be checked, as we do not know the size of the population.

The success/failure condition is met as the products np and n(1-p) are bigger than 10 (the number of successes and failures are both bigger than 10).

3) The significance level is assumed to be 0.05.

The sample has a size n=9260.

The sample proportion is p=0.31.

 

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.3*0.7}{9260}}\\\\\\ \sigma_p=\sqrt{0.000023}=0.005

Then, we can calculate the z-statistic as:

z=\dfrac{p-\pi-0.5/n}{\sigma_p}=\dfrac{0.31-0.3-0.5/9260}{0.005}=\dfrac{0.01}{0.005}=2.089

This test is a two-tailed test, so the P-value for this test is calculated as:

\text{P-value}=2\cdot P(z>2.089)=0.0367

As the P-value (0.0184) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that there is a significant change in the percent of bills being paid by medical​ insurance.

5 0
3 years ago
Which statement explains the difference between a line and a segment?
ser-zykov [4K]

Answer:

Answer: A line does not have a formal definition, and a segment is described through undefined terms.

Step-by-step explanation:

<h3>HOPE THIS HELP YOU!! :))))</h3>
5 0
3 years ago
Read 2 more answers
What is the answer to 17+(9-6)×(12÷3)
Dvinal [7]

Answer:

17 + (9 - 6)(12 ÷ 3) =

17 + (3)(4) =

17 + 12 =

29

7 0
3 years ago
Read 2 more answers
What is the 10th term of the geometric sequence 1/256,1/128,1/64,1/1
chubhunter [2.5K]

Answer:

2

Step-by-step explanation:

you multiply each term by 2

4 0
3 years ago
Simplify the expression,<br>cos x cotx + sinx​
olya-2409 [2.1K]

Answer:

cosec x

Step-by-step explanation:

\cos  x \:  \cot x +  \sin  x \\  \\  = \cos  x  \times  \frac{\cos  x }{ \sin  x }  +  \sin  x   \\  \\  = \frac{\cos^{2}  x +\sin^{2}  x }{ \sin  x }  \\  \\  = \frac{1}{ \sin  x }  \\  \\  = cosec x \\  \\   \red{ \boxed{ \bold{\therefore \:  \cos  x \:  \cot x +  \sin  x = cosec \: x}}}

8 0
3 years ago
Read 2 more answers
Other questions:
  • 5
    6·1 answer
  • Jack rides A bike 8 miles and 3/4 of an hour . Use Vocabulary for unit rates and fractions to explain how to find jacks speed in
    8·1 answer
  • What is an equivalent expression of 12+18n+7-14n
    12·2 answers
  • What's the x-intercept of y =4x + 8
    9·1 answer
  • What is the Area of the shaded portion in the square.
    10·1 answer
  • Tommy bought 3 cups of blueberries. He will eat 2 cup of blueberries each day.
    12·1 answer
  • Please help me I need the answers!
    12·1 answer
  • 1. Which of the following linear equations has
    12·1 answer
  • I need help on this.
    6·1 answer
  • Explain type i error and give an example. explain type ii error and give an example. what is the best way to reduce both kinds o
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!