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DedPeter [7]
2 years ago
8

A circle has a radius of 10.4 cm the angle at the centre of the sector is 120 calculate the area of the sector

Mathematics
1 answer:
LekaFEV [45]2 years ago
5 0

Answer:

sector area: 113.3

Step-by-step explanation:

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Find the measure of each exterior angle of a regular 56-gin
Studentka2010 [4]
The sum of the measure of the exterior angles of any polygon is 360. x represents the measure of a single exterior angle.
360/56=x
The simplified fraction is 45/7
3 0
3 years ago
I need help with #4 a-d
lesya [120]

a repeating decimal is placed over 9's instead of 0's.   for example: 0.23 = \frac{23}{100}, but 0.232323... = \frac{23}{99}

a) x = 0.121212

b) 100(x) = 100(0.121212)

    100x  = 12.1212

c)  100x = 12.1212

-  <u>        x =   0.1212</u>

     99x  =  12

         x  = \frac{12}{99}

d) -2\frac{12}{99}  <em>= -2\frac{4}{33} when simplified</em>

The number is rational becase it has a repeating decimal

6 0
3 years ago
Seven subtracted from the quotient of a number and 2 is -6
Pachacha [2.7K]
N/2 -7 = -6

add 7 to both sides;
n/2 -7+7 = -6+7

n/2 = 1
multiply both sides by 2 (  or divide by 1/2 ) in order to get n by itself.

n/2 * 2/1 = 1 * 2/1

n = 2
5 0
3 years ago
Read 2 more answers
PLS HELP WILL GIVE BRAINLIEST
Oduvanchick [21]

Answer:

60

The angle acute so my guess is 60

Hope this helps :)

6 0
3 years ago
Please someone help please
Helga [31]

Answer:

Step-by-step explanation:

d=m+a/n

Firstly, we multiply n to get rid of it by both sides. Since n is dividing a.

d=m+a/n

*n     *n

dn=m+a

-m  -m

a=dn-m

8 0
3 years ago
Read 2 more answers
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