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likoan [24]
3 years ago
7

when the temperature is 68 F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometer

s does sound travel in five seconds?
Mathematics
2 answers:
Liula [17]3 years ago
7 0

Answer:

umm i calculated it and i found it was 0.715

Step-by-step explanation:

Digiron [165]3 years ago
6 0

Hello!

Since we are given that the speed of sound in the air travels about 343 meters per second, we can multiply 343 meters per second by 5, and then we convert the meters to kilometers.

343 · 5 = 1715 meters per 5 seconds.

1000 meters are equal to 1 kilometer. So, we can divide 1715 by 1000 to convert meters to kilometers.

1715 / 1000 = 1.715

Therefore, the speed of sound in air is about 1.715 kilometers per 5 seconds.

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1/2 the weight of a brick +20= 1/3 the weight of a brick +30. What is the weight of the brick?
prisoha [69]
1/2x+20=1/3x+30
Subtract 20 on both sides
1/2x=1/3x+10
Subtract 1/3x on both sides
1/6x=10
Multiply by 6 on both sides
X=60
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3 years ago
A baseball league forms using a total of 12 coaches, 78 players
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And what else is in the problem I do not get what the problem is
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Kasey and her sister both sold cookie dough. Her sister sold three times as many tubs of cookie dough. If they sold a total of 8
Rufina [12.5K]
X= number of tubs Kasey sold
3x= number tubs sister sold

Add the number sold by Kasey and her sister to equal the total sold (88).

x + 3x= 88
combine like terms

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divide both sides by 4

x= 22 number tubs Kasey sold


Number Sold by Sister
3x= 3(22)= 66


CHECK:
x + 3x= 88
22 + 3(22)= 88
22 + 66= 88
88= 88


ANSWER: Kasey sold 22 tubs and her sister sold 66 tubs.

Hope this helps! :)
7 0
3 years ago
Grace wants to buy a portable music player for $150 dollars. Her weekly allowance is $15. If she saves $10 each week toward the
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Step-by-step explanation:

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Determine whether the sequence appears to be an arithmetic sequence. If so, find the common difference and the next three terms
guapka [62]

an aritmetic sequence increases by the same amount each time (if it decreases, then it increases by a negative number)


the common difference is the number that must be added to a term to get the next term


let's see if it increases by the same amount

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so it appears to be aritmetic

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-41-6=-47

the next 3 terms are -35, -41, -47

4 0
3 years ago
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