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ch4aika [34]
2 years ago
8

Antonio is standing on a at the edge of a canyon. He yells loudly and hears an echo 1.2 s later. How far away is the other side

of the canyon? You may assume the speed of sound is 340 m/s.
Russell is watching a thunderstorm. He hears the thunder 5 s after seeing a flash of lightning. How far away was the lightning?
Mathematics
1 answer:
Maurinko [17]2 years ago
6 0

Answer:

  • 204 m
  • 1700 m

Step-by-step explanation:

a) In 1.2 seconds, sound will travel a distance of ...

  (1.2 s)(340 m/s) = 408 m

This is the round-trip distance, so the reflecting surface is half that distance away.

The other side of the canyon is 204 m away.

__

b) In 5 seconds, the sound will travel a distance of ...

  (5 s)(340 m/s) = 1700 m

This is the one-way distance, so the lightning is about 1700 m away.

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The difference of x and a number is 6. What is the other number?
Firlakuza [10]

Answer:

-6+x

Step-by-step explanation:

Let the number=n

x-n=6

-n=6-x

n=-6+x

6 0
3 years ago
Mr. Foster is starting a new job. His salary for the first year is $30,000. He will receive a 5% raise each year after that. Wri
stira [4]

Answer:

s= 30000+1500x

Step-by-step explanation:

Given data

Le the number of years be x

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6 0
3 years ago
What is the simplest form of the expression?
Rina8888 [55]
^ 3 sqrt 750 + ^ 3 sqrt 2058 - ^ 3 sqrt 48
 Rewriting the expression we have
 ^ 3 sqrt (6 * x ^ 3) + ^ 3 sqrt (6 * y ^ 3) - ^ 3 sqrt (6 * z ^ 3)
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 Clearing x, y and z we have:
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 Then, rewriting the expression
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 10 (^ 3 sqrt (6))
 answer
 the simple form of the expression is
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3 0
3 years ago
Do all 6 digit numbers have 6 addends in their expanded form? Explain
AfilCa [17]
Yes, all 6 digit numbers have 6 addends in their expansion 
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3 years ago
6x + 10x = 64 what does x equal?
Nutka1998 [239]
X= 4
You add 6x and 10x then divide 16x from 64 which makes x=4
6 0
3 years ago
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