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ludmilkaskok [199]
3 years ago
12

a person on a moving sidewalk travels 21 feet in 7 seconds .the moving sidewalk has a length of 180 feet. how long will it take

to move from one end of the sidewalk to the other
Mathematics
1 answer:
mario62 [17]3 years ago
8 0
The answer is 59.99 because if you divide 180 by 21 you will get 8.57..... Then you need to multiply 8.57..... by 7 to get 59.99
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Lacey and richens decide to connect their two machines so that lacey’s output becomes richens ‘ input. If 3 is the initial, what
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Step-by-step explanation:

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Which of the following groups of measurements will form a triangle?<br>Help please.​
erastovalidia [21]

Answer:

It's C

Step-by-step explanation:

A triangles mesurement has to add up to 180. C is the only one that does.

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2 years ago
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Suppose a water tank in the shape of a right circular cylinder is thirty feet high and eight feet in diameter. a) How much sheet
Zanzabum

Answer:

755.98 ft^2

Step-by-step explanation:

Height of the Cylinder= 30 feet

Diameter = 8 feet

Radius= Diameter/2 = 8/2 = 4 feet

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3 years ago
Wpisz odpowiednie liczby: 1 cm2=...........mm2 9 cm2=...........mm2 5,2 cm2=............mm2 1 dm2 =...........cm2 17dm2=........
Tomtit [17]

Answer:

1 cm^2 = 100 mm^2

9 cm^2 = 900 mm^2

5.2 cm^2 = 520 mm^2


1 dm^2 = 100 cm^2

17 dm^2 = 1700 cm^2

4.3 dm^2 = 430 cm^2


1 m^2 = 10000 cm^2

7 m^2 = 70000 cm^2

2.5 m^2 = 25000 cm^2


1 km^2 = 1000000 m^2

50 km^2 = 50000000 m^2

8.5 km^2 = 8500000 m^2

Step-by-step explanation:

1 cm = 10 mm

1 cm^{2} = 10×10 mm^{2} = 100 mm^{2}

9 cm^{2} = 9×100 mm^{2} = 900 mm^{2}

5.2  cm^{2} = 5.20×100 mm^{2} = 520 mm^{2}


1 dm = 10 cm

1 dm^{2} = 10×10 cm^{2} = 100 cm^{2}

17 dm^{2} = 17× 100 cm^{2} = 1700 cm^{2}

4.3 dm^{2} = 4.3 × 100 cm^{2} = 430 cm^{2}


1 m = 100 cm

1 m^{2} = 100×100 cm^{2} = 10000 cm^{2}

7 m^{2} = 7×10000  cm^{2} = 70000 cm^{2}

2.5 m^{2} = 2.5×10000 cm^{2} = 25000 cm^{2}


1 km = 1000 m

1 km^{2} = 1000×1000 m^{2} = 1000000 m^{2}

50 km^{2} = 50×1000000 m^{2} = 50000000 m^{2}

8.5 km^{2} = 8.5×1000000 m^{2} = 8500000 m^{2}

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3 years ago
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