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3 years ago

An airplane flies 3800 km in 4 hours 45 minutes. What is its average speed in kilometers per hour?

Mathematics

2 answers:

Oliga [24]3 years ago

8 0

The answer will be 800 kilometers per hour.

Hope this helped!

8_murik_8 [283]3 years ago

3 0

Average speed = (distance covered in some time) / (time to cover the distance)

4 hours 45 minutes = 4-3/4 hours = 4.75 hours

Average speed = (3,800 km) / (4.75 hours) = 800 km/hr

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a round swimming pool has a circumference of 66 feet. Carlos wants to buy a rope to put across the diameter of the pool. the rop

xxMikexx [17]

Answer:

$11.25
21 ft

Step-by-step explanation:

The formula for the circumference of a circle in terms of diameter is ...

C = πd

Then the diameter is ...

d = C/π

If we use π ≈ 22/7 and C = 66 ft, then we find the diameter to be ...

d = (66 ft)/(22/7) = (66 ft)(7/22) = 21 ft

The diameter of the pool is about 21 feet.

Since Carlos needs 4 more feet of rope, he will want to buy 25 feet of rope for a cost of ...

(25 ft)($0.45 /ft) = $11.25

Carlos will pay $11.25 for the rope.

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3 years ago

Drag each figure to show if it is similar to the figure shown or why it is not similar

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Answer:

Step-by-step explanation:

The given figure is a rectangle having length = 9 yd and width = 3 yd

Now we will check each figure

Figure one- rectangle with length = 18 yd and width = 9 yd

For similarity of both rectangles ratio of length should be equal to ratio of widths.

$\frac{3}{9}\neq\frac{9}{18}$

So rectangles are not similar.

Figure 2- rectangle with length = 3 yd and width = 6 yd

$\frac{9}{3}\neq \frac{3}{6}$

So figures are not similar.

Figure 3 - rectangle with length = 3 yd and width = 1 yd

$\frac{9}{3}=\frac{3}{1}$

Therefore, figures are similar.

Figure 4 -rectangle with length = 8 yd and width = 2 yd

$\frac{3}{2}\neq \frac{9}{8}$

So given rectangles are not similar.

Figure 5 - rectangle with length = 18 yd and width = 6 yd

$\frac{9}{18}=\frac{3}{6}$

So rectangles are similar.

Figure 6 - trapezoid with larger base = 18 yd and height = 6 yd

Since shapes of the given figures are not same so they are not similar.

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3 years ago

Is this correct? please help I thought that what I did was correct but just to be correct.

lisabon 2012 [21]

Yes that is correct

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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