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
LUCKY_DIMON [66]
3 years ago
6

Find the radius of the circle containing 20 degree arc of a circle whose length is 15 Pi meters

Mathematics
1 answer:
Yanka [14]3 years ago
5 0

s = rθ where s is the arc length, r is the radius, and theta is the angle (in radians)


We first have to convert 20 degrees tor radians so we do


20 * pi/180 = pi/9


15pi is the s value (arc length) so we have:


15pi = pi/9 * r


15pi / (pi/9) = r


r = 135m

You might be interested in
Drag the tiles to the correct boxes to complete the pair.
seraphim [82]

Answer:

1. h(x) = x + 5—> f(x) = x² + 4x - 5, and g(x) = x - 1

2. h(x) = x + 3 —> f(x) = x² - 9, and g(x) = x - 3

3. h(x) = x + 4—> f(x) = x² - 16, and g(x) = x - 4

4.h(x) = x - 1—> f(x) = x² - 4x + 3, and g(x)= x - 3

Step-by-step explanation:

A) f(x) = x² - 9, and g(x) = x - 3

We are told that; h(x) = f(x)/g(x)

f(x) = x² - 9 can be factorized to;

f(x) = (x + 3)(x - 3)

Thus; h(x) = (x + 3)(x - 3)/(x - 3)

(x - 3) will cancel out to give;

h(x) = x + 3

B) f(x) = x² - 4x + 3, and g(x)= x - 3

x² - 4x + 3 can be factorized as;

(x - 1)(x - 3)

Thus; f(x) = (x - 1)(x - 3)

h(x) = (x - 1)(x - 3)/(x - 3)

h(x) = x - 1

C) f(x) = x² + 4x - 5, and g(x) = x - 1

x² + 4x - 5 can be factorized as;

(x - 1)(x + 5)

Thus; f(x) = (x - 1)(x + 5)

h(x) = (x - 1)(x + 5)/(x - 1)

h(x) = x + 5

D) f(x) = x² - 16, and g(x) = x - 4

x² - 16 can be expressed as;

(x + 4)(x - 4)

Thus; f(x) = (x + 4)(x - 4)

h(x) = (x + 4)(x - 4)/(x - 4)

h(x) = x + 4

8 0
3 years ago
Use the binomial theorem to expand the binomial (x + -2y)8.
m_a_m_a [10]

Answer:

256x8y8256+2x8y8+56x3y7+28x7y2+126x5y4+x8+1048x7y+1932x6y2+2240x5y3+2310x4y4+2296x3y5+1932x2y6+1048xy7+y8+8x6y+56xy3+28x2y+8xy

Step-by-step explanation:

3 0
4 years ago
The perimeter of the cover of a math textbook is 34 inches. If the width of the cover is 7 inches, what is the length of the cov
Ierofanga [76]
A= lxw = 34 Times 7 meaning the answer is 238
6 0
3 years ago
Read 2 more answers
The area of a square quilt is 196 square inches. There is a smaller square patch on the quilt with an area of 49 square inches.
Makovka662 [10]




To find your answer you would find the perimeter of the small square which is 28.

You would then find the perimeter of the big square which is 56. 

Next, you subtract 56 from 28 and get 28.  

So the difference is 28 inches.

Hope this helps!!



5 0
3 years ago
Read 2 more answers
in chemistry class Andrew has earned scores of 64 69 and 73 on three tests he must maintain an average of 72
olganol [36]
You haven't told me what the question is.  But I put the mouse
to my forehead, closed my eyes, took a deep breath, and I could
see it shimmering in my mind's eye.  It was quite fuzzy, but I think
the question is

                   "What score does Andrew need on the next test
                     in order to raise his average to 72% ?"

The whole experience drew an incredible amount of energy
out of me, and the mouse is a total wreck.  So we'll just go ahead
and answer that one.  I hope it's the correct question.

The average score on 4 tests is

                                     (1/4) (the sum of all the scores) .

In order for Andrew to have a 72% average on 4 tests,
the sum of the 4 scores must be

                                         (4) x (72%)  =  288% .

Out of that total that he needs, he already has 

                            (64% + 69% + 73%) = 206%

on the first three tests.

So in order to average 72% for all 4 tests,
he'll need to score

                             (288%  -  206%)  =   82%

on the fourth one.
6 0
3 years ago
Other questions:
  • Write an equation with the point (3,7) and has a slope of 7
    5·1 answer
  • 2. Higher Order Thinking Jordan needs
    13·1 answer
  • At midnight, the temperature is 34 degrees Fahrenheit. The temperature
    5·2 answers
  • The mean of four integers is -1. Three of the four integers are 3, -6, and 7 what is the fourth integer?
    6·1 answer
  • Lin and Diego both ran for 10 seconds, each at their own constant speed. Lin ran 40 meters and Diego ran 55 meters.
    6·2 answers
  • Find the area of 8ft ,10ft. Round to the nearest hundredth. Use 3.14 to approximate it .
    7·1 answer
  • To sacrifice my own life for pakistan
    13·2 answers
  • Slope: -1 intercept: -7.9
    12·1 answer
  • I know it’s not math, but I couldn’t find science but please help
    8·2 answers
  • What is the value of the expression (8^2/3)^1/2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!