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Alexus [3.1K]
3 years ago
10

What is the area of this polygon?

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
7 0

all you have to do is add up all the sides and your answer will be 21 cm

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A sound wave travels through iron at a rate of 5120\,\dfrac{\text{m}}{\text{s}}5120
Jet001 [13]

The rate at which the sound travels in km/hr is 0.142km/hr

<h3>Conversion of m/s to km/hr</h3>

If a sound wave travels with a speed of 5120m/s, in order to convert to km/he, we will use the conversion factor below;

1hr = 3600secs

1km = 1000m

Using the conversion factor in our dimensional analysis

5120m/s = 5120m/1s * 1km/1000m * 3600s/1hr

5120m/s  = 5120m/3600000

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Hence the rate at which the sound travels in km/hr is 0.142km/hr

learn more on dimensional analysis here: brainly.com/question/21510595

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2 years ago
Perry currently has $180 dollars and is spending $6 per day. Nick has no money but is earning $8 each day. After how many days w
Elan Coil [88]

12.857 days

Step-by-step explanation:

Since the number of days is passing the same for both Nick and Perry we can assign the unknown value (no. Of days) the same denotation of x

Therefore;

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180 = 8x + 6x

180 = 14x

X = 12.857

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