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
ivolga24 [154]
3 years ago
7

What is the arc length

Mathematics
2 answers:
sdas [7]3 years ago
7 0
180 degrees i think tell me if im wrong
algol [13]3 years ago
6 0
Circumference of semicircle is πr

3.14 × 9
28.26

Therefore,
length of arc = circumference - diameter
l = 28.26 - 18
l = 10.26
You might be interested in
Please post an provide Simplify 5p^2\5p^3
Rom4ik [11]
( p - 3) or (2p + 1)
5 0
3 years ago
A research company desires to know the mean consumption of meat per week among people over age 40. A sample of 610 people over a
Papessa [141]

Answer: (3.0,\ 3.2)

Step-by-step explanation:

Confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}  (1)

, where \overline{x} = Sample mean

z_{\alpha/2}= Critical z-value

\sigma = Population standard deviation.

n= Sample size.

As per given , we have

n= 610

\sigma=1.1

\overline{x}=3.1

Significance level for 85% confidence : \alpha=1-0.85=0.15

By z-table critical two tailed z-value : z_{\alpha/2}=z_{0.075}=1.44

Put all values in (1) , we get

3.1\pm 1.44\dfrac{1.1}{\sqrt{610}}

3.1\pm 1.44\dfrac{1.1}{24.698}

3.1\pm 0.064

=(3.1-0.064,\ 3.1+0.064)=(3.036,\ 3.164)\approx(3.0,\ 3.2)

Hence, the 85% confidence interval for the mean consumption of meat among people over age 40.  = (3.0,\ 3.2)

5 0
3 years ago
2(b+3c) equivalent expressions<br>Options: <br><br>3(b+2c)<br>(b+3c) +(b+3c)<br>None of the above
Lana71 [14]
2(b + 3c) → We first need to simplify this.

Simplify.

2b + 6c

1st Option : 

3(b + 2c)

Simplify.

3b + 6c

This is INCORRECT, as it is not equal to 2b + 6c.

2nd Option :

(b + 3c) + (b + 3c)

Simplify.

2b + 6c

This is CORRECT because 2b+6c = 2b+6c

(b + 3c) + (b + 3c)  → Answer

~Hope I helped!~



5 0
3 years ago
Subduction zones occur at the boundaries between
ycow [4]
D - tectonic plates
Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Regions where this process occurs are known as subduction zones
7 0
3 years ago
Read 2 more answers
6x - 2 ( x + 4 )= 12
ElenaW [278]

Answer:

x = 5

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • which of the following represents a relation that is not a function? a. x -8 -6 7 10 y 33 31 39 33 b. x -8 -6 0 3 y 33 31 39 33
    10·1 answer
  • Which relation is a function?
    13·2 answers
  • How do you sole this question kelpie sold cameras on her web site. She bought the cameras for $65 each included a 60% markup to
    9·1 answer
  • You have a three year fixed rate lease of $900/month due to expire next month. Your landlord is willing to renew the three year
    7·1 answer
  • John likes to watch the birds in her yard. One morning, she noticed that there are twice as many Robbins as Blue Jays. She count
    7·1 answer
  • Find the least common denominator of the fractions 5/12 and 2/5.
    11·2 answers
  • 8. Determine which relations represent functions. If the relation
    10·1 answer
  • The frequency (f) and the wavelength (w) of a sound traveling in air is the equation fw=343. If the frequency is 200 what is the
    14·1 answer
  • What is 4/5 divided 3/8? 2/15 8/3. 2. 2 2/15
    11·1 answer
  • The bulletin board is in the shape of a square. Find two rational numbers that are within 1/8in. of the actual side length.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!