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
antoniya [11.8K]
3 years ago
10

A bicycle wheel has a radius of 13 inches.

Mathematics
1 answer:
Dovator [93]3 years ago
6 0
The distance traveled in  1 roation is assumed to be the circumferece

c=2pir
in 13 rotations

13 times 2pir=26pir=distance traveled for 13 revolutions

r=13
d=26pi13
d=338pi
using 3.14 for pi
d=1061.32 inches
You might be interested in
For the experiment of rolling an ordinary pair of​ dice, find the probability that the sum will be less than 4 or greater than 8
fenix001 [56]

Answer:

the probability is 3/6 or 1/2

Step-by-step explanation:

7 0
3 years ago
A study is performed in San Antonio to determine whether the average weekly grocery bill per five-person family in the town is s
bogdanovich [222]

Answer:

No, the sample evidence is not statistically significant (P-value = 0.125).

To reject the null hypothesis, the P-value has to be smaller than the significance level, so the significance level to reject the null hypothesis has to be 0.125 or higher.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the average weekly grocery bill per five-person family in San Antonio is significantly different from the national average.

Then, the null and alternative hypothesis are:

H_0: \mu=131\\\\H_a:\mu\neq 131

The significance level is 0.05.

The sample has a size n=50.

The sample mean is M=133.474.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=11.193.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{11.193}{\sqrt{50}}=1.583

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{133.474-131}{1.583}=\dfrac{2.474}{1.583}=1.563

The degrees of freedom for this sample size are:

df=n-1=50-1=49

This test is a two-tailed test, with 49 degrees of freedom and t=1.563, so the P-value for this test is calculated as (using a t-table):

P-value=2\cdot P(t>1.563)=0.125

As the P-value (0.125) is bigger than the significance level (0.05), the effect is  not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the average weekly grocery bill per five-person family in San Antonio is significantly different from the national average.

8 0
2 years ago
Interior and Exterior Triangle Angles
k0ka [10]
Answer: 20.2
Add all the angles and set it equal to 180
Combine like terms
20x-2=180
X= 9.1

The equation for v is 2x+2
Replace x with 9.1 and then solve
3 0
3 years ago
Please help asap ill mark you brainliest!!
julia-pushkina [17]

Answer:

4,184.87 square meters

Step-by-step explanation:

let me know if you want to see work . . .

3 0
3 years ago
Please help its due today!!<br> Solve for h
antiseptic1488 [7]

Answer:

n= v

------------------

1.047198r2

Step-by-step explanation:

Step 1: Flip the equation.

1.047198nr2=v

Step 2: Divide both sides by 1.047198r^2.

1.047198nr2

1.047198r2

=

v

1.047198r2

n=

v

1.047198r2

8 0
3 years ago
Other questions:
  • Carlos thinks that a triangle
    13·1 answer
  • 20 POINTS PLEASEEE HELP
    6·1 answer
  • Write the ratio as a fraction 6 minutes to 5 hours
    8·2 answers
  • Find the sum and express it in its simplest form. (6u-7c-6) + (-2u+4c)
    14·2 answers
  • 1.25 x 8 - 1.5<br><br> please help me
    7·2 answers
  • The power,
    5·2 answers
  • The graph of linear function k passes through the points (-3, 0) and (1, 8).
    8·1 answer
  • What’s the area of the figure?
    13·1 answer
  • Solving for x, please answer quickly D:
    7·2 answers
  • Fatih parasının ilk %30unu sonra %35ini harcar ve geriye 105 TL’si kalır. Fatih’in toplamda kaç TL’si vardır?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!