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Degger [83]
3 years ago
10

Is 50 square root plus 2 square root irrational and equal to which of these four options

Mathematics
1 answer:
m_a_m_a [10]3 years ago
4 0

Answer:

Yes, 50 square root plus 2 square root irrational

6\sqrt{2}

Step-by-step explanation:

\sqrt{50} + \sqrt 2

= \sqrt{25\times 2} + \sqrt 2

= 5\sqrt{2} + \sqrt 2

= 6\sqrt{2}

Since, \sqrt{2} is irrational.

Therefore, \sqrt{50} + \sqrt 2 is also irrational and

\sqrt{50} + \sqrt 2=6\sqrt{2}

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3 years ago
Consider the numbers √27 and √39.
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3 0
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).

The area of the disk

=The area of the outer circle - The area of the inner circle

= \pi (r+\triangle r)^2- \pi r^2

=\pi [r^2+2r\triangle r+(\triangle r)^2-r^2]

=\pi [2r\triangle r+(\triangle r)^2]

Since (Δr)² is very small, So it is ignorable.

∴A=2\pi r\triangle r

The density \delta (r)= \frac{40}{1+r^2}

We know,

Mass= Area× density

        =(2r \pi \triangle r)(\frac{40}{1+r^2}})

Total mass M=\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i

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

                      =40\pi[ln(1+r^2)]_0^5

                      =40\pi [ln(1+5^2)-ln(1+0^2)]

                     =40\pi ln(26)

                     = 409.59 kg (approx)

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

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3 years ago
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x= 113°

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3 years ago
(0,2) (1,0) what is the equation of this line in slope intercept form
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The slope intercept form is y= -2x+2
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