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docker41 [41]
2 years ago
8

2.Một công ty sẽ bán N quyển sách sau khi chi tiêu x nghìn $ cho việc quảng cáo quyển sách

Mathematics
1 answer:
tamaranim1 [39]2 years ago
8 0

Answer:

that makes no sence we t guy

Step-by-step explanation:

hi hi hi hi hi hi h i hi h h ih  i hi hi i  hi h

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Will mark most brainlest if correct
lutik1710 [3]

Answer: each guest gets 4.19 cm²

Step-by-step explanation:

The cake is a circle. The area which he cuts for himself is a sector with a central angle of 120 degrees. The formula for determining the area of a sector is expressed as

Area of sector = θ/360 × πr²

Where

θ represents the central angle

π is a constant whose value is 3.14

r represents the radius of the circle.

From the diagram,

r = 4cm

Therefore, area of the cake that he cut for himself is

120/360 × 3.14 × 4²

= 16.75 cm²

The total area of the cake is

3.14 × 4² = 50.24 cm²

Therefore, the rest of the cake is

50.24 - 16.75 = 33.49 cm²

The amount that each guest gets would be

33.49/8 = 4.19 cm²

8 0
3 years ago
Can someone help me with this
Elanso [62]

Answer:

1,256 dm^2 and 400π dm^2

Step-by-step explanation:

The circumference is equal to 2pi times the radius. So 40pi=2pi times the radius so the radius is 20. The area of a circle is pi times the radius squared or 400pi and if using 3.14 for pi this would be 1,256 dm^2

6 0
1 year ago
Read 2 more answers
If military time is 0145, what time is it on a regular clock
fenix001 [56]
I love military time its 1:45 am
4 0
3 years ago
Solve |z-8|=4 a) z=-4, z=4 b) z=-12,z=12 c)z=-12,z=-4 d)z=4, z=12
mylen [45]

Answer:

We have z - 8 = 4 or z - 8 = -4;

Then, z = 12 or z = 4;

The correct answer is d).

Step-by-step explanation:


8 0
3 years ago
Help!! Anyone know how to do this?
Oksanka [162]

Answer:

42.5

Step-by-step explanation:

3 0
3 years ago
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