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ddd [48]
3 years ago
8

The diameter of a circle is 7 cm. What is the circumference of the circle?( Use π = 22/7) *

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

Answer:

2πr

2(22/7)(3.5)

<u>22</u>

Step-by-step explanation:

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Line segment ON is perpendicular to line segment ML. Line segment OM = 13 units in length, line segment PN = 8 units in length.
Alex_Xolod [135]

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24

Step-by-step explanation:

Line segment ON is perpendicular to line segment ML. Line segment OM = 13 units in length, line segment PN = 8 units in length.

Circle O is shown. Line segments M O, N O, and L O are radii. Lines are drawn to connects points M and N and points N and L to form chords. A line is drawn from point M to point L and intersects line O N at point P. The length of O M is 13 and the length of P N is 8. Angle O P L is a right angle.

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Consider the function f given by f(x)=x*(e^(-x^2)) for all real numbers x.
NISA [10]

Answer:

\frac{\sqrt{\pi}}{4}

Step-by-step explanation:

You are going to integrate the following function:

g(x)=x*f(x)=x*xe^{-x^2}=x^2e^{-x^2}  (1)

furthermore, you know that:

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lets call to this integral, the integral Io.

for a general form of I you have In:

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furthermore you use the fact that:

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with n=2s a even number

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\int_0^{\infty}x^2e^{-x^2}dx=\frac{(2(1)-1)!}{2^{1+1}(1^1)}\sqrt{\pi}=\frac{\sqrt{\pi}}{4}

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