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
natta225 [31]
3 years ago
9

What is the ratio of the radius of a circle to its circumference

Mathematics
1 answer:
maksim [4K]3 years ago
5 0
ANSWER:

r : 2 ( Pi ) r

Hope this helps! <3
You might be interested in
The local branch of the Internal Revenue Service spent an average of 21 minutes helping each of 10 people prepare their tax retu
AURORKA [14]

Answer:

The confidence Interval is [- 0.7053  10.4521]

a: The  hypotheses  are

H0: μ1=μ2    against the claim Ha :μ1≠μ2

b. The critical value for t∝/2 for 17 d.f  t > 2.508 and  t < -2.111

c. t= -2.8422

d. The calculated value of t= -2.8422 is less than t < -2.11 the critical value therefore we reject H0 and conclude there is a difference between the two means.

Step-by-step explanation:

When the standard deviations are not the same then the confidence intervals for mean differences are calculated as

(x1`-x2`)- t∝/2 √s1²/n1 + s2²/n2 < u1-u2 < (x1`-x2`)+ t∝/2 √s1²/n1 + s2²/n2

x1`= 21        x2`= 27

n1=  10       n2= 14

s1= 5.6       s2= 4.3

The degrees of freedom is calculated using

υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1

= 17

The t∝/2 for 17 d.f = 2.11

Putting the values

(x1`-x2`)- t∝/2 √s1²/n1 + s2²/n2 < u1-u2 < (x1`-x2`)+ t∝/2 √s1²/n1 + s2²/n2

(21-27) - 2.11√5.6²/10+ 4.3²/14 < u1-u2 <(21-27)  +2.11√5.6²/10+4.3²/14

6- 2.11*2.111 < u1-u2 <  ( 6 )  +2.11*2.111

6- 4.4521 < u1-u2 <  ( 6 )  +5.294

- 1.5479 < u1-u2 <  10.4521

The confidence Interval is [- 0.7053  10.4521]

a: The  hypotheses  are

H0: μ1=μ2    against the claim Ha :μ1≠μ2

The claim is that there is a difference in the average time spent by the two services

b. The critical value for t∝/2 for 17 d.f  t > 2.508 and  t < -2.111

The degrees of freedom is calculated using

υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1

= 17

c. The test statistic is

t= (x1`-x2`)  /√s1²/n1 + s2²/n2

t= (21-27)  /√5.6²/10+ 4.3²/14

t= -6/2.111

t= -2.8422

d. The calculated value of t= -2.8422 is less than t < -2.11 the critical value therefore we reject H0 and conclude there is a difference between the two means.

5 0
3 years ago
A student has earned a 92%, 88%, 65%, 79%, and 99% on her unit tests. What is the student's mean unit test score? Enter your ans
Feliz [49]
92+88+65+79+99=423
423/5=84.6%
5 is from the amount of percentages given
6 0
3 years ago
Read 2 more answers
How does the graph of a inverse function
ale4655 [162]

Answer:

B

Step-by-step explanation:

y=x you can imagine by drawing graph

8 0
3 years ago
Eight less a number is less than or equal to seventeen
allsm [11]

Answer:

n ≥ -9  

Step-by-step explanation:

Let n = the number

8 <em>less than</em> a number means "n – 8", but

8 <em>less</em> a number means "8 – n," so

8 – n ≤ 17     Subtract 8 from each side

    -n ≤ 9      Multiply each side by -1

    n ≥ -9

<em>Note</em>: When we multiply by a negative number, we must reverse the inequality.

<em>Check:</em>

Try n = -8.

8 – (-8) ≤ 17

  8 + 8 ≤ 17

       16 ≤ 17

<em>True</em>.

8 0
3 years ago
WHAT IS THE ANSWER FOR THIS?!? I WILL MARK BRAINLIEST!!!
Dimas [21]
1. it’s saying 2-6 which is -4

2. it’s saying -6-5 which is -11
6 0
3 years ago
Other questions:
  • How do I factor 5x²-17x+6?
    12·1 answer
  • Using the quadratic formula to solve<br> | 4X² - 3x + 6 = 2x +1, what are the values<br> of X?
    10·1 answer
  • What is y=? i have no idea
    12·1 answer
  • Please help ASAP.........
    8·2 answers
  • One number to three times another number is 24. Five times the first number added to three times the other number is 36. Find th
    5·1 answer
  • Which of the following is true about the graphs below?
    9·1 answer
  • What value does the 3 represent n the number 16.344 ?
    5·1 answer
  • If monkey have 1 bananana and gorilla takes 1 bananana from monkey how many monkey have left
    11·2 answers
  • Show work if possible, thanks!
    9·1 answer
  • Well This isn't a homework question but I wanted to say how can I catch up in Algebra 1
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!