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vekshin1
3 years ago
5

suppose 5 men and 7 women are on a crowded elevator. at the next floor, four people get off the elevator. find the probability t

hat all are women?
Mathematics
1 answer:
lubasha [3.4K]3 years ago
3 0
The total number of arrangements for all of them to be women is:
C(7, 4) because the order does not matter; we'd still have the same arrangements.

Now, we can simplify this:
C(7, 4) = \frac{7!}{4!(7 - 4)!}
= \frac{5040}{4!3!}
= \frac{5040}{24 \cdot 6}
= \frac{5040}{144} = 35

Now, the total number of arrangements, without restriction, is simply: C(12, 4) because we don't care who we pick.

\text{P(4 women): } \frac{35}{495} = \frac{7}{99}
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Sarkis cannot draw a triangle with these side lengths.

Step-by-step explanation:

Sarkis cannot draw a triangle with these side lengths.

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2 years ago
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3 years ago
Write Y+2=1/3x in standard form
solong [7]

The standard form of a line is in the form

Ax + By = C

A, B and C are integers, and A is positive. Let's start with multiplying the whole equation by 3 to get rid of denominators:

3y+6=x

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6=x-3y

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x-3y=6

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4 0
3 years ago
Quadratic formula?<br><br> 2x^2-4x+2=0<br> A. 1 <br> B. -4<br> C. 6<br> D. -2<br> E. 2
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3 years ago
Can someone plsss help me with the circled question tysm if u doo :((
nika2105 [10]

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Step-by-step explanation:

Pythagorean theorem states that (for right triangles) if you square each shorter side and add those together, you will get the sum of the longest side (hypotenuse) squared.

This is commonly written as:

a^2 + b^2 = c^2, where c is the hypotenuse.

((For right triangles this will always be opposite the 90° angle.))

Since you know one of the shorter sides and the hypotenuse, rewrite the equation as such:

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This goes to:

sqrt(c^2 - b^2) = a

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6 0
2 years ago
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