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Burka [1]
3 years ago
15

what is the radius of a circle that has a sector area of 3pi cm squared and a central angle of 2pi/3 radians

Mathematics
2 answers:
tankabanditka [31]3 years ago
6 0

Answer:

r=3 cm

Step-by-step explanation:

In the attached file

cupoosta [38]3 years ago
6 0
Required radius is 3 cm
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Trigonometry, IF answer is delivered on time WILL give BRANLIEST
Lunna [17]

Answer:

x=37°

y=6

Step-by-step explanation:

(ASSUMING BD is a perpendicular bisector of AC, otherwise answers maybe be wrong)

Consider the triangle ABC:

AB is the same length as BC (marked), meaning ABC is an isosceles triangle.

Since ABC is isosceles, ∠BAC=∠BCA=53

All angles in a triangle add up to 180:

180=∠ABC + ∠BAC + ∠BCA

180= ∠ABC + 53 +53

∠ABC = 180 - 106

∠ABC = 74

Assuming BD bisects ∠ABC perfectly, x is half of ∠ABC.

x=74/2=37

If BD bisects AC perfectly, AD=DC=y=6

8 0
3 years ago
A factory increased its production by 22.5 % and produced 49000tonnes. How many tonnes was it producing before?
dezoksy [38]

Sería 37975 porque le tienes que restar el procentaje que se le ha añadido para saber cómo era antes

4 0
3 years ago
Combine like terms to write an equivalent expression for <br><br> 2( 4y^2 + 6x - 2y^2 + 12x.)
natima [27]
8y^2 + 12x - 4y^2 + 24x
= 4y^2 + 36x
3 0
2 years ago
what is the common number to be subtracted from each term of the ratio 11:8 to get the new ratio 2:1.?​
JulijaS [17]

Answer:

5 should be subtracted  from each term

Step-by-step explanation:

\frac{11-x}{8-x}=\frac{2}{1}

Cross multiply,

1 * (11 - x) = 2*(8-x)

11 -x = 2*8 - 2*x

11 - x = 16 - 2x

Subtract 11 from both sides,

-x = 16 - 2x - 11

-x = 5 - 2x

Add 2x to both sides

-x +2x = 5 - 2 + 2x

x = 5

7 0
2 years ago
Only male crickets chirp. They chirp at different rates depending on their species and the temperature of their environment. Sup
bezimeni [28]

Answer:

4920

7084800

2585952000

Step-by-step explanation:

82 chirps = 1 minute

We have 60 minutes in one hour, so 82 x 60 =4920 chirps in one hour

In 24 hours we have 60x24 = 1440 minutes and in one minutes we have 4920 chirps,

Therefore 4920 x 1440 mins =7084800 chirps in one day .

There are 365 days in a year and in one day the cricket chirps 7084800, so 365 days x 7084800 = 258595200 chirps in a year

6 0
2 years ago
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