7 you know by the example that they have up there
Let say that you want to take 1 area. Before the event, the probability of A and B would be:
A= blue and green= (18/12x6) + (18/12x6) = 36/72
B= green and yellow= (18/12x6) + (18/12x6) <span>= 36/72
</span>
If the area that picked is green, then the probability of A and B become
A= blue and green= (18/12x6-1) + (17/12x6-1) = 35/71
B= green and yellow= (17/12x6-1) + (18/12x6-1) = 35/71
Both of the areas of A and B is decreased because they share the probability of green. So A and B would be a dependent event.
Answer:
143.94 is the area of the circle
Answer: <em><u>ratio</u></em>
(a Rational number is a number that can be written as a <u>ratio</u> of two integers)
Step-by-step explanation:
By definition a Rational number is that number that can be expressed as a fraction:
![\frac{a}{b}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7Bb%7D)
Where the numerator "a" is an integer and the denominator "b" (
)
Then, in other words, a Rational number is a number that can be written as a ratio of two integers.
Since the denominator "b" can be
, we know that every Integer is a Rational number.
Below are some examples of Rational numbers:
-
is a Rational number, because it can be written as: ![\frac{6}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B6%7D%7B1%7D)
is a Rational number, because it can be written as: ![\frac{5}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B2%7D)
is a Rational number, because it can be written as: ![3=\frac{3}{1}](https://tex.z-dn.net/?f=3%3D%5Cfrac%7B3%7D%7B1%7D)
Answer:
<h2>Earing is $13</h2><h2>Necklace is $10</h2>
Step-by-step explanation:
Firstly, let us express the cost
for Li
5e+n=63---------1
for Jen
e+2n=36---------2
the system of equations are
5e+n=63----1
e+2n=36-----2
Multiply 1 by 1 and 2 by 5 to eliminate e we have
5e+n=63
5e+10n=180
-0-9n=-117
9n=117
Divide both sides by 9 we have
n=117/9
n=13
put n=13 in eqn 1 we have
e+2(13)=36
e+26=36
e=36-26
e=10
Earing is $13
Necklace is $10