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prohojiy [21]
2 years ago
7

Please help me with this question

Mathematics
2 answers:
valkas [14]2 years ago
8 0
I believe the answer is b
ZanzabumX [31]2 years ago
5 0
Not sure at all but i think it could be B.

If you multiply (x^2 - 5) by (x^2 + 5) then you get (x^4 - 25)
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True

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With questions like these, you can put any number in the option to make it correct. HOWEVER, in this question, the only correct answer would be 5.5.

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3 years ago
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3 years ago
) The density of oil in a circular oil slick on the surface of the ocean at a distance of r meters from the center of the slick
Feliz [49]

Answer:

Therefore the mass of the of the oil is 409.59 kg.

Step-by-step explanation:

Let us consider a circular disk. The inner radius of the disk be r and the outer diameter of the disk be (r+Δr).

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Therefore

\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i=\int_0^5 \frac{80r\pi }{1+r^2}dr

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3 0
2 years ago
What is the difference between polygons and quadrilaterals?​
julia-pushkina [17]

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...

8 0
3 years ago
At the first meeting of the Tennis Club, the 7 members decided to have a tournament in which every player will play a match agai
mariarad [96]

Answer:

21 matches

Step-by-step explanation:

This is a combination problem where we have to select two member out of 7 members

 

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5 0
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