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labwork [276]
3 years ago
12

A chorus has 5 girls and 15 boys. If two are chosen at random to sing a duet, what is the probability that both will be boys?

Mathematics
2 answers:
Sonbull [250]3 years ago
8 0

Answer:

Step-by-step explanation:

If you ad them together you get 20 15/20 are boys 15 divided by 20 is .75

Galina-37 [17]3 years ago
8 0
.75 or 75%

If there’s 20 kids total in the class and 15 out of the 20 are boys then you would divide the 15 by 20 and get .75 if you were doing it for girls then you would divide 5 by 20 and you would get .25 or 25%
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By Green's theorem,

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where C is the circle x^2+y^2=9 and D is the interior of C, or the disk x^2+y^2\le1.

Convert to polar coordinates, taking

\begin{cases}x=r\cos\theta\\y=r\sin\theta\end{cases}\implies\mathrm dx\,\mathrm dy=r\,\mathrm dr\,\mathrm d\theta

Then the work done by \vec F on the particle is

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3 years ago
Write an equation in standard form for a line that passes through (2,2) and (0,-3).
asambeis [7]
So,

The standard form is:
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First, we find "m," the slope.  Subtract the y-coordinates from each other.  Do likewise with the x-coordinates.

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inn [45]

Answer:

8m

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Answer:

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3 years ago
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