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
Dafna11 [192]
3 years ago
8

What is the area of a sector of a circle with a radius of 9 centimeters and formed by a central angle that measures 120°?

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
6 0

Answer:

Step-by-step explanation:

If this was an entire circle, the area could be found by using

Area = pi * r^2 where r = 9

To take the central angle into account, use this formula

Area = 120/360  * pi * r^2

Area = 1/3 * pi * 9^2

Area = 27 pi

area  = 84.78 cm^2  which isn't there.

You might be interested in
Factor completely.<br> 4x^3 + 12x^2 + 3x + 9
Sergio039 [100]

Answer:

(4x^2 + 3)(x + 3)

Step-by-step explanation:

Split the equation in the middle so you can factor it out:

4x^3 + 12x^2   |   + 3x + 9

Then factor out:

4x^2(x + 3)   |   3(x + 3)

Congrats, you completed your equation:

(4x^2 + 3)(x + 3)

5 0
3 years ago
Margaret deposits $1,000 in a savings account that pays 1.4% interest compounded
ozzi

Answer:

The balance after 1 year is;

$1,014.05

Step-by-step explanation:

To do this, we use the compound interest formula

That will be ;

A =P (1 + r/n)^nt

A is the amount generated which we want to calculate

r is the rate = 1.4% = 0.014

P is the amount deposited = $1,000

n is the number of times it is compounded annually which is 2 (semi-annually means 2 times in a year)

this the number of years which is 1

we have this as:

A = 1,000( 1 + 0.014/2)^(2*1)

A = 1,000(1 + 0.007)^2

A = 1,000(1.007)^2

A = $1,014.05

8 0
3 years ago
What is 7/4 as a mixed number
valentinak56 [21]
The answer to the question is 1 and 3/4
6 0
3 years ago
Read 2 more answers
What is the square root of 600?
BaLLatris [955]
24. 49489743 or 24 and 1/2 approximate
Happy to Help!
8 0
3 years ago
Read 2 more answers
A rectangle has an area of 171 square meters. Its width is ten meters less than the length. Find the measures of the length and
9966 [12]

Step-by-step explanation:

The area of a rectangle is 171 m²

Let l is the length and b is the width of the rectangle

It width is 10 m less than the length. So,

b = l-10 ...(1)

Area of a rectangle is given by :

A=l\times b\\\\171=l(l-10)\\\\l^2-10l=171\\\\l^2-10l-171=0\\\\l^2-19l+9l-171=0\\\\\text{taking common together}\\\\l(l-19)+9(l-19)=0\\\\(l-9)(l-19)=0

or

l = 9 m or l = 19 m

If l = 9 m,

b = 9-10 = -1 m (can't be possible)

If l = 19 m

b = 19-10 = 9 m

So, the length an the breadth of the rectangle is 19 m and 9 m respectively.

8 0
3 years ago
Other questions:
  • What is the general form of the equation of the line shown?
    12·2 answers
  • The tree in milan's backyard is 8.4m high. how high is it in centimeters? be sure to include the correct unit in your answer.
    13·1 answer
  • If the exchange rate between the American dollar and the Japanese yen is such that $4.00= 442 yen, how many yen could be exchang
    14·2 answers
  • Which of the following is equivalent to 2x2 + 9x + 9?
    10·2 answers
  • A &amp;B share the cost in a ratio of 3:2 A pays £125 how much dose B pay
    7·1 answer
  • Discuss the possible reasons for the differences in price in Leomande. Discuss ways to find unit prices using proportions. The l
    6·1 answer
  • PLEASE HELP, TWENTY POINTS PLUS BRAINLIEST
    7·1 answer
  • -(j-7)+3=5 what is j?
    9·1 answer
  • |a| if a&gt;0<br> Please help!
    10·2 answers
  • Ariana is writing a poem. She writes 30 words on the first line, 30 words on the second line, 30 words on the third line, and 30
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!