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
Eddi Din [679]
3 years ago
8

The radius of the circle above is 7 in. What is the circumference of the circle? (Use = 3.14)

Mathematics
1 answer:
algol [13]3 years ago
5 0

Answer:

43.96

Step-by-step explanation:

Circumference formula : 2πr

2π(7) = 14π

π is about 3.14

14(3.14) = 43.96

You might be interested in
Which of the following number sentences is an example of the identity property? Select all that apply.
ArbitrLikvidat [17]

I think one is 8.7 + 0 = 8.7

7 0
3 years ago
What is what is 2000 * 3000​
elena-14-01-66 [18.8K]

Answer:

600,000

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
In a sample of eight whitefish caught in Yellowknife Bay, the mean arsenic concentration in the liver was 0.32 mg/kg, with a sta
Advocard [28]

Answer:

The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 8 - 1 = 7

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 7 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.3246

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.3646\frac{0.06}{\sqrt{8}} = 0.0502

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 0.32 - 0.0502 = 0.2698 mg/kg

The upper end of the interval is the sample mean added to M. So it is 0.32 + 0.0502 = 0.3702 mg/kg

The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).

8 0
2 years ago
What is the slope of the line that passes through the points (2,1) and (-4,-5)
cestrela7 [59]
\text{Slope =} \dfrac{1+5}{2+4} =   \dfrac{6}{6} = 1
6 0
3 years ago
Read 2 more answers
Find the area of a rectangle with a length of 7 centimeters and a width of 24 centimeters.
nadezda [96]

Answer:

168 cm^2

Step-by-step explanation:

Given,

Length ( l ) = 7 cm

Width / breadth ( b ) = 24 cm

To find : -

Area of rectangle = ?

Formula : -

Area of rectangle = l x b

Area of rectangle

= 7 x 24

= 168 cm^2

4 0
2 years ago
Other questions:
  • What is the value of x. In circle a bae = dae
    5·2 answers
  • Help me plz for algebra
    15·2 answers
  • Which of the following is an example of a proper fraction: 6/6,4/17,15/2,11/10
    9·2 answers
  • Which fraction is equivalent to 0.3636?
    5·1 answer
  • Jack,Jill y Bill cada uno lleva un balde de 48 onzas lleno de agua bajando la colina . En el momento que ellos llegaron abajo, e
    11·1 answer
  • How many fifths are there in 3⅗​
    5·2 answers
  • Pls help soon!<br>Find the distance between the points (-4, -5) and (3, -1).
    8·2 answers
  • Define linear relationship​
    8·2 answers
  • Could someone explain this to me?
    12·1 answer
  • How do you write 750% as a fraction or mixed number
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!