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
AleksAgata [21]
2 years ago
6

What would the circumference be of a circle if the radius is 14

Mathematics
1 answer:
Fantom [35]2 years ago
4 0
C≈87.96 because C=2πr=2·π·14≈87.96459
You might be interested in
Can someone solve this please
Radda [10]
She is incorrect because x^2 can still be factored.
5 0
3 years ago
The mean incubation time of fertilized eggs is 21 days. Suppose the incubation times are approximately normally distributed with
Korvikt [17]

Answer:

a) 20.16; b) 20.49 and 21.51

Step-by-step explanation:

We use z scores for each of these.  The formula for a z score is

z=\frac{X-\mu}{\sigma}.

For part a, we want the 20th percentile; this means we want 20% of the data to be lower than this. We find the value in the cells of the z table that are the closest to 0.20 as we can get; this is 0.2005, which corresponds with a z score of -0.84.

Using this, 21 as the mean and 1 as the standard deviation,

-0.84 = (X-21)/1

-0.84 = X-21

Add 21 to each side:

-0.84+21 = X-21+21

20.16 = X

For part b, we want the middle 39%.  This means we want 39/2 = 19.5% above the mean and 19.5% below the mean; this means we want

50-19.5 = 30.5% = 0.305 and

50+19.5 = 69.5% = 0.695.

Looking these values up in the cells of the z table, we find those exact values; 0.305 corresponds with z = -0.51 and 0.695 corresponds with z = 0.51:

-0.51 = (X-21)/1

-0.51 = X-21

Add 21 to each side:

-0.51+21 = X-21+21

20.49 = X

0.51 = (X-21)/1

0.51 = X-21

Add 21 to each side:

0.51+21 = X-21+21

21.51 = X

4 0
3 years ago
Jasmine has 5 books that she wants to read. She wants to read the nonfiction book first and the mystery book last. In how many d
umka21 [38]
The different combinations is 9, since we can't rearrange the two novels.
I did 3*3 which equals 9.
4 0
3 years ago
Read 2 more answers
Trina has two brothers. one brother is 7 years older than trina and the other brother is 7 years younger than trina. the product
AlladinOne [14]
(a) 95 = (x+7)*(x-7)

(b) 95 = (x+7)*(x-7) 
Expand the brackets:
95 = x² -7x + 7x -49 = x² - 49
Subtract x² from both sides:
95-x² = -49
Subtract 95 from both sides:
-x²=-49-95 
-x²= -144
Divide both sides by -1 to get rid of the negative numbers:
-x²/-1=-144/-1
x²=144
Take the square root of 144:
x = ± squareroot of 144
x = 12 or -12
x = 12 because you cannot have a negative age so Trina is 12 years old.
     
7 0
3 years ago
MN is the midsegment of the trapezoid ABCD. What is the length of segment AB?
vladimir1956 [14]

Dear Student,

Answer to your query is provided below:

The length of segment AB = 8

Explanation to answer is provided by attaching image.

8 0
2 years ago
Other questions:
  • Help me??? with equations?? plzz im tired and this is due tomorrow
    14·1 answer
  • Domain is the set of all input values, while range is the set of all:
    13·1 answer
  • Solve:<br> 4m- 4 - 8 = -2m + 12
    13·1 answer
  • Which of these angles are supplementary?
    9·2 answers
  • VHelena has five different flowers. She plans to give one flower to each of her five teachers in any order. She gives the first
    6·1 answer
  • Someone please help me
    7·2 answers
  • Find the measure of the acute angle that line y=1/3x+4 makes with a horizontal line. Round your answer to the nearest tenth.
    11·1 answer
  • This is not math but plssss help here are some points
    12·2 answers
  • please solve for the function and the function only for both of these problems for 10 points! thank you so much! :)
    9·1 answer
  • Find an equation for the line below <br> (Pls provide explanation)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!