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3 years ago

13

The speed of sound is approximately 1.2 × 103 km/h. How long does it take for sound to travel 7.2 × 102 km? Write the answer in

minutes.
(Please show your work)

1 answer:

Shkiper50 [21]3 years ago

6 0

Time = distance
---------------
speed

= 7.2 x 10^2
--------------------
1.2 x 10^3

= 0.6 hrs = 0.6 x 60 = 36 minutes.

Hope this helps!

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professor190 [17]

Answer:

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Step-by-step explanation:

Given : the product of the numbers is 10, the sum of the squares of the numbers is 29, and the sum of the cubes of the numbers is 133.

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Since, given that the product of the numbers is 10 that is $xy=10$

Also, given the sum of the squares of the numbers is 29 that is $x^2+y^2=29$

and the sum of the cubes of the numbers is 133 that is $x^3+y^3=133$

Using, the given identity $(x+y)(x^2-xy+y^2)=x^3+y^3$ ,

Substitute, the given values, we have,

$(x+y)(29-10)=133$

Simplify , we get,

$(x+y)(19)=133$

Divide both side by 19, we have,

$(x+y)=7$

Thus, the sum of two numbers is 7.

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3 years ago

Read 2 more answers

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Oksi-84 [34.3K]

Answer:

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Step-by-step explanation:

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BUT also their LCM=48

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Second number=3x=3x8=24

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Given

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Procedure

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