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mihalych1998 [28]
3 years ago
8

Simplify: xy(x+5y)(x+2y)

Mathematics
1 answer:
emmasim [6.3K]3 years ago
7 0

Answer:

x3y+7x2y2+10xy3

Step-by-step explanation:

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Step-by-step explanation:

Given : The formula S(d)=\sqrt{9.8d} to calculate the estimated speed, in meters per second of a tsunami.

1. If the disturbance occurred at an ocean depth of 4,500 meters.

Then put d= 4500 in the above formula , we get

S(d)=\sqrt{9.8\times4500}

S(d)=\sqrt{44100}=\sqrt{21\times21\times10\times10}\\\\=\sqrt{210^2}=210

Hence, if the disturbance occurred at an ocean depth of 4,500 meters , the estimated speed would be 210 meters per second .

Also, A meter per second is equal to 3.6 kilometers per hour.

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Then by unitary method ,

210 meters per second  =3.6\times210 kilometers per hour

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