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
seropon [69]
3 years ago
15

Please help me out please:)

Mathematics
1 answer:
Grace [21]3 years ago
7 0

Answer:

56.1 cm²

Step-by-step explanation:

In any circle the area (A) of a sector is

A = area of circle × fraction of circle

   = πr² × \frac{81}{360}

   = π × 8.91² × \frac{81}{360}

   = \frac{8.91^2(81)\pi }{360} ≈ 56.1 cm²

You might be interested in
One-half the sum of x,y, and z
BabaBlast [244]
The keyword is "sum" which tells you x, y, and z are being added. One half of the sum means that the sum of the three numbers is going to be divided by 2.

x + y + z
------------
2
3 0
3 years ago
Evaluate the expression
PolarNik [594]

\frac{16^{6/4}}{16^{2/2} }

\frac{64}{16}

4

7 0
3 years ago
Select all the statements you agree with.
wolverine [178]

The statements that I agree with, with respect to a parallelogram are:

  • A parallelogram has six sides.
  • Opposite sides of a parallelogram are parallel.
  • All angles of a parallelogram have the same measure.
  • All sides of a parallelogram have the same length.

<h3>What is a parallelogram?</h3>

A parallelogram can be described as the quadrilateral  that do contains  two pairs with respect to their parallel sides.

It should be noted that the sides that can be found in the parallelogram are usually of the same length and there the sides that can be attributed to a parallelogram is usually 6.

Therefore, the option 1,2,4,5 are correct.

Learn more about parallelogram at:

brainly.com/question/970600

#SPJ1

6 0
11 months ago
A typical cup of coffee contains about 100 mg of caffeine and every hour approximately 16% ofthe amount of caffeine inthe body i
Over [174]

Answer:

a) \frac{dC}{dt} = rC

And for this case we can rewrite the model like this:

\frac{dC}{C} = r dt

If we integrate both sides we got:

ln C = rt + k

If we use exponentials for both sides we got:

C = e^{rt} e^k = C_o e^{rt}

For this case C_o = 100 mg and r = -0.16

So then our model would be given by:

C(t) = 100 e^{-0.16 t}

Where t represent the number of hours

b) C(5) = 100 e^{-0.16*5}= 44.9329

Step-by-step explanation:

Part a

For this case we can assume the proportional model given by:

\frac{dC}{dt} = rC

And for this case we can rewrite the model like this:

\frac{dC}{C} = r dt

If we integrate both sides we got:

ln C = rt + k

If we use exponentials for both sides we got:

C = e^{rt} e^k = C_o e^{rt}

For this case C_o = 100 mg and r = -0.16

So then our model would be given by:

C(t) = 100 e^{-0.16 t}

Where t represent the number of hours

Part b

For this case we can replace the value t=5 into the model and we got:

C(5) = 100 e^{-0.16*5}= 44.9329

7 0
3 years ago
Which matrix represents the system of equations shown below?
Leona [35]

Answer:

121-22

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • How would you make 0.24 as a mixed number
    9·1 answer
  • Jayla buys and sells vintage clothing. She bought two blouses for $25.00 each and later sold them for $38.00 each. She bought th
    14·1 answer
  • How to solve this equation 18.5 = -4.5 + 7(k + 6)
    12·2 answers
  • Please help, answer asap
    10·1 answer
  • (4 + 3)2 +5 =
    8·1 answer
  • Which value of x makes this equation true?
    9·2 answers
  • What is ( x + y + 2 )( y + 2 )?
    11·2 answers
  • bob bought three more then twice as many apples as Kathy. Together they ought 15 apples. How many did each of them buy?​
    9·1 answer
  • for what values of a, a polynomial in standard form, equivalent to the product of (x^2+x-1)(x-a), does not contain x^2
    6·1 answer
  • I’ll brainlist. (this is my sisters work can’t be stuffed)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!