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astraxan [27]
3 years ago
8

Please answer correctly ASAP !!! Will mark brianliest !!!!!!!!

Mathematics
1 answer:
Ainat [17]3 years ago
5 0

Answer:

-13 - \frac{7}{4}b

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rjkz [21]

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Step-by-step explanation:

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0.5 +6.38=6.9 because 0.5 is precise to the tenth digit so the answer must also be rounded to the nearest tenth true or false?
ioda

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True

Step-by-step explanation:

The rules of significant figures

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Hexagonal tiles of side 20 cm are used to tile a room which measures 6.25 m by 4.85 m. Assuming we complete the edges by cutting
ch4aika [34]

Answer: 292 tiles

Step-by-step explanation:

To find the number of tiles needed , we need to know the area of the hexagonal tiles and also the area of the room.

<u>Area of hexagon</u>

The area of hexagon is given as :

Area = \frac{3\sqrt{3}}{2}a^{2}

Where a is the length of side.

Therefore:

A = \frac{3\sqrt{3}}{2}20^{2}

A = \frac{3\sqrt{3}}{2} X 400

A = (400 x 3 x \sqrt{3}) / 2

A = \frac{2078.460969}{2}

A = 1039.23cm^{2}

Also to find the area of the room , we must first convert from m to cm

6.25 m = 6.25 x 100 cm

6.25m = 625 cm

4.85m = 485cm

Therefore: Area of the room  = length x breadth

Area = 625 x 485

Area = 303125cm^{2}

Therefore , the number of tiles needed = area of the room / area of hexagon

Number of tiles = 303125/ 1039.23

N = 291.6823032

Therefore , the number of tiles needed ≈ 292

4 0
4 years ago
Divide g by 9, then triple the result
Alexeev081 [22]

Answer:

nose que dice no hablo inglesh :v

7 0
2 years ago
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