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Alla [95]
3 years ago
6

Four less than five times a number is equal to 11

Mathematics
2 answers:
Allushta [10]3 years ago
6 0
4 < 5 * n = 11
less than means <
then 5 multiply by any variable
last is equal to 11
fiasKO [112]3 years ago
5 0
5n-4=11 n is equal to 3
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The area of the surface is 144.708

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z=g(x,y)=xy

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∂g∂x=y,∂g∂y=x

Substituting to the formula

S=∬√1+( ∂g∂x)2+(∂g∂y)2dA

Thus,

S=∬√1+(y)2+(x)2dAS=∬√1+x2+y2dA

The region in the XY-plane is defined by the intervals  0≤θ≤2π,0≤r≤4

Converting the integral into polar coordinates,

S=∫2π0∫40√1+r2rdrdθ

Integrating with respect to r

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Integrating with respect to θ

S=(17√173−13)[θ]2π0

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