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horsena [70]
3 years ago
12

Alice and Bill are planning to have three children. (Assume that it is equally likely for a boy or a girl to be born.) What is t

he probability that all three of their children will be girls?
Mathematics
1 answer:
zhuklara [117]3 years ago
6 0

Answer:

\frac{1}{8}

Step-by-step explanation:

Alice and Bill  are planning to have three children

We have to find the probability that all three of their children will be girl.

Sample space =S={BBB,BBG,BGB,GBB,GGG,GBG,GGB,BGG}

Total =8

Number of cases in which all three children are girls={GGG}

Probability,P(E)=\frac{number\;of\;favorable\;cases}{Total\;number\;of cases}

Using the formula

Then , the probability that all three of their children will be girls=\frac{1}{8}

You might be interested in
A store employs 8 women and 13 men.
alisha [4.7K]

Answer:

A store employs 8 women and 13 men.

Then totally, they have 8 + 13 = 21 employees

=> The percentage of the employees who are women:

P = 8/21 = ~0.4 = 40%

Hope this helps!

:)

7 0
3 years ago
4x + y = 3 -2x + 3y = -19 what's the solution plz help
Rainbow [258]

The solution to given system of equations is x = 2 and y = -5

<em><u>Solution:</u></em>

<em><u>Given the system of equations are:</u></em>

4x + y = 3 ---------- eqn 1

-2x + 3y = -19 ---------- eqn 2

We have to find the solution to above system of equations

<em><u>We can solve the system by substitution method</u></em>

From eqn 1,

4x + y = 3

Isolate y to one side

y = 3 - 4x ----------- eqn 3

<em><u>Substitute eqn 3 in eqn 2</u></em>

-2x + 3(3 - 4x) = -19

-2x + 9 - 12x = -19

Combine the like terms

-14x = -19 - 9

-14x = -28

Divide both sides of equation by -14

<h3>x = 2</h3>

<em><u>Substitute x = 2 in eqn 3</u></em>

y = 3 - 4(2)

y = 3 - 8

<h3>y = -5</h3>

Thus the solution is x = 2 and y = -5

5 0
3 years ago
All questions are about this system of equations:
sertanlavr [38]
If we are eliminating x, we would multiply the 2nd equation by -5

5x + 18y = 23
x + 3y = 2....multiply by -5
-----------------
5x + 18y = 23
-5x - 15y = - 10 (result of multiplying by -5)
----------------add
0 + 3y = 13.....bye-bye x :)

6 0
3 years ago
A fair spinner has 10 equal sections: 3 red, 3 blue and 4 green.
Natalka [10]

Answer:

10

Step-by-step explanation:

cool ok byeeeeeeeeeee

6 0
2 years ago
HELP ASAP PLSSSSSSS
AysviL [449]
It would be B because eaxh section either repeats itself or is close to repeating its previous part
7 0
2 years ago
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