PLSSS HELP IF YOU TURLY KNOW THISS
1 answer:
Answer:
x =
Step-by-step explanation:
The bar above the 3 indicates the 3 is a repeating digit , that is
0.3333....
We require 2 equations with the repeating digit placed after the decimal point
let x = 0.3333... (1)
Multiply both sides by 10 )
10x = 3.3333... (2)
Subtract (1) from (2) thus eliminating the repeating digits
9x = 3 ( divide both sides by 9 )
x = =
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Answer:
a) {GGG, GGB, GBG, BGG, BBG, BGB, GBB, BBB}
b) {0,1,2,3}
c)
d)
Step-by-step explanation:
We are given the following in the question:
Suppose a couple planned to have three children. Let X be the number of girls the couple has.
a) possible arrangements of girls and boys
Sample space:
{GGG, GGB, GBG, BGG, BBG, BGB, GBB, BBB}
b) sample space for X
X is the number of girls couple has. Thus, X can take the values 0, 1, 2 and 3 that is 0 girls, 1 girl, 2 girls and three girls from three children.
Sample space: {0,1,2,3}
c) probability that X=2
P(X=2)
That is we have to compute the probability that couple has exactly two girls.
Favorable outcome: {GGB, GBG, BGG}
d) probability that the couple have three boys.
Favorable outcome: {BBB}