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Margarita [4]
3 years ago
5

From a point on a river, two boats are driven in opposite directions, one at 6 miles per hour and the other at 10 miles per hour

. in how many hours will they be 48 miles apart?
Mathematics
1 answer:
kumpel [21]3 years ago
8 0

(6 mph)x + (10 mph)x = 48 mi. Then (16 mph)x = 48 mi, and x = 3 hrs (answer)

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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
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Sholpan [36]

The correct answer should be -1 and 2/3, or 4/6

We have one value, 5/6

if we subtract 1/6 from that, we get 4/6

Since we don't have a full number value, subtracting 1 from that gives us -1 and 4/6

4 0
4 years ago
A student is raising money for a local food pantry. A local business agrees to donate an additional 20% of what the student rais
Reil [10]

Answer: 300

Step-by-step explanation:

20% of 240 is 48. The local business gives 48 dollars. 5% of 240 is 12. The principal gives $12. 48+12+240=300 dollars raised.

5 0
4 years ago
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algol [13]
I think that the answer is A because you are being asked for the tens place. Since you are looking to identify the place value, choice B and C are automatically eliminated because each place value increases by multiplying by ten. 20 and 60 are not multiples of 10. To identify the tens place, you would have to multiply by ten. I thought of this question in the sense of scientific notations.
6 0
3 years ago
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Find the missing factor C that makes the equality true.<br> 1225 = (4x2)(C)<br> C
kicyunya [14]
The answer is 1225/8
7 0
4 years ago
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